It's a lovely sunny morning in Holland, and LAM MUNG-NAM, a Hong Kong forensic pathologist, is driving her car to visit LAM WONG TSZ-HUNG, during which she sees a dead cow lying across the road. Not wanting to delay her plan, she has to use her unique superpower. Though TSZ-HUNG has been trying to match MUNG-NAM up with someone, no one can meet MUNG-NAM's expectations. In the evening, HO NIN, HO YUET and YAU LING-MUI are hunted down by two big guys, leaving them no other choice but to take shelter in TSZ-HUNG's houseboat. Noticing her handbag being stolen, MUNG-NAM immediately gives pursuit but accidentally knocks over YING WOOD-CHEUK, who surprisingly lends her his bicycle. After the problem is solved, MUNG-NAM cannot help feeling attracted to this handsome man, WOOD-CHEUK, but soon passes out in his arms before she can even express her gratitude……

MUNG-NAM has a date with WOOD-CHEUK, but gets stood up, so MUNG-NAM decides to return to Hong Kong. With MUNG-NAM handling a suicide case, her subordinate, KAN TING-SZE, however thinks it's a murder case. In order to clarify the situation, MUNG-NAM decides to use her superpower. MUNG-NAM and TING-SZE promise to fulfill the last wish of the deceased, later on they find a strange restaurant. HO NIN takes the ring that belonged to the female vampire from LING-MUI, and later at night, something weird happens while he is writing a book. After MUNG-NAM enters the restaurant together with TING-SZE, she surprisingly finds out that the chef is actually WOOD-CHEUK. Passing by a backstreet ally, HO NIN sees something sucking blood from a female, and simultaneously he himself is knocked into a garbage bin, passing out……

MUNG-NAM tails after WOOD-CHEUK back to his restaurant where WOOD-CHEUK explains to her why he stood her up the other day. After MUNG-NAM uses her superpower to make the female deceased reveal the killer, TING-SZE suspects this was done by a vampire, yet MUNG-NAM does not believe him. While bringing HO NIN home, HO YUET sees MUNG-NAM passed out on the street, so she instantly performs acupuncture on her; whereas HO NIN calls TING-SZE and tries to take advantage of the thing regarding MUNG-NAM to challenge him to a duel at their usual spot. While there, WOOD-CHEUK shows up and he even learns from HO YUET that HO NIN and TING-SZE used to be fellow brothers at the same martial arts school. During the challenge, TAI-PING suddenly appears and starts insulting the martial arts style of Sui Yi School, and at that very moment, HO YUET out of the blue gets so much strength that she attacks TAI-PING and drives him away……

Through TING-SZE, TAI-PING challenges KAM KIN to a fight and even tells him to sign a waiver of liability. Meanwhile, WOOD-CHEUK returns to the restaurant and cannot help recalling things that happened between him and KAM KIN in the past. On the other hand, KAM KIN also reflects on the bygone days, reminiscing about how TSOI-SANG taught him Kung Fu. After TSZ-HUNG informs MUNG-NAM that MUNG-YIU went to a haunted school in search of supernatural beings, MUNG-NAM promptly goes to the school to look for her. MUNG-NAM requests on behalf of MUNG-YIU to withdraw from the Supernatural Society, so LING-MUI reprimands MUNG-NAM for being overly controlling, but TSZ-HUNG explains that it's because MUNG-YIU suffers from post-traumatic stress disorder. LING-MUI puts on the ring and soon finds out that she is able to hear other people's thoughts, therefore, she publishes the whole thing online regarding the ring of the female vampire……

Just as TING-SZE and the others are troubled by KAM KIN's duel, WOOD-CHEUK hears the sounds of someone performing a lion dance from outside of the restaurant, and it turns out that TSUI LUNG-CHU opens up a shop on the opposite side of the street. LUNG-CHU invites everyone to visit his shop, during which he frankly discloses his other identity as a vampire hunter. Following KAM KIN's duel with TAI-PING, all of them return to the restaurant to celebrate, and suddenly KAM KIN coughs up blood. Seeing that MUNG-NAM appears to be preoccupied, WOOD-CHEUK advises her that she should live in the present, and instantly MUNG-NAM comes close and kisses WOOD-CHEUK. The fact that TING-SZE rejoined the Sui Yi School makes HO YUET feel very happy, and she even finds out that she has a crush on him. TING-SZE returns to Tai Ping School, trying to retrieve his personal belongings……

KAM KIN goes to have a word with WOOD-CHEUK, hoping he will teach HO NIN and the other two Kung Fu, but he turns him down. MUNG-NAM's health has been getting worse, and TING-SZE thinks her problem is just psychological, but MUNG-NAM suspects that she is being punished for having used too much of her superpower. When WOOD-CHEUK is about to close the door of the restaurant, he receives a phone call from MUNG-NAM, who wants to make a take-out order. Apart from preparing food for MUNG-NAM, WOOD-CHEUK even gives her an answer. LING-MUI returns the ring to a mysterious person called X, yet she later runs into a vampire while tailing after that person. Meanwhile, HO YUET tells LING-MUI to come back to Hong Kong, but LING-MUI refuses to do so, on top of which she even starts having hallucinations. Bringing along MUNG-NAM, TSZ-HUNG arrives in Holland to look for a highly skilled doctor, but to no avail……

After TSZ-HUNG wakes up in the morning, she finds MUNG-NAM went missing. HO NIN and TING-SZE come to Holland; whereas LING-MUI regains her consciousness and then tells them that in her dream, the female vampire asked MUNG-YIU to return the ring to her. MUNG-YIU arrives at the meeting place, and Miss X suddenly shows up. WOOD-CHEUK also comes to Holland in search of MUNG-NAM, and midway through, he bumps into YING-TIN. When MUNG-NAM goes shopping with TSZ-HUNG, her symptoms occur more frequently. Later on, MUNG-NAM sees WOOD-CHEUK, telling him that she will die soon. TING-SZE and HO NIN return to Hong Kong, following which they use their participation in a martial arts competition as an excuse, trying to persuade KAM KIN to spare them the trouble of helping out in the restaurant……

After being saved by WOOD-CHEUK, MUNG-NAM wakes up and recalls the past when she suffered injuries and was saved by a doctor ten years ago. At that time, MUNG-NAM, in order to become a normal person, drank up the miracle spring water then instantly lapsed into a coma, and forgot everything after regaining her consciousness. Both TING-SZE and HO NIN take part in the Ultimate Boxing Match; whereas SATAN also easily defeats the president of the Thai Boxing Club, and as a result, HO NIN and the other two come to realise that he is not an opponent that they can easily deal with. Though TING-SZE identifies the weakness of their opponent, KAM KIN lectures them that they should not use inauthentic techniques. Competing in the match, TING-SZE is still thinking about possible solutions, fortunately, at the last minute, he comes up with a strategy that works. TAI-PING shows up at the match, instantly killing his opponent with a single punch……

As soon as she returns to Hong Kong, MUNG-NAM immediately runs into a mysterious homicide case. TING-SZE determines the cause of death is excessive bleeding; whereas MUNG-NAM knows this was done by a vampire. MUNG-YIU asks MUNG-NAM whether she had a quarrel with WOOD-CHEUK, so MUNG-NAM frankly admits that she and WOOD-CHEUK have different perspectives on things and they don't get along with each other. After the host announces that Sui Yi School will face Tai Ping School in the next round of the match, TAI-PING vows to wipe out Sui Yi School and spare no single soul. Meanwhile, LING-MUI discovers that someone spotted a vampire during the Ultimate Boxing Match, and LUNG-CHU also reveals that former champions have all gone missing. LING-MUI requests LUNG-CHU to join her to capture the vampires, therefore the two pose as journalists to take photos for TAI-PING……

Right in front of the late KAM KIN's tomb, all his students vow to make Sui Yi School thrive, and WOOD-CHEUK tells them that he will be their new master. MUNG-NAM arrives at WOOD-CHEUK's restaurant, seeking an answer to her previous question. Having heard this, WOOD-CHEUK seems bewildered as he has already put the answer on a plate, however, MUNG-NAM completely forgot the whole thing. In an effort to prove that WOOD-CHEUK is an immortal being, LUNG-CHU and LING-MUI attempt to have his DNA tested. Once again, MUNG-NAM goes to meet WOOD-CHEUK, who tells her that he has already given her the answer, but MUNG-NAM still seems very confused, emphasizing that she does not know. After returning home, MUNG-NAM once again finds the plate, yet the next morning, she does not remember anything that happened last night. MUNG-YIU goes for a job interview, and WING-YEE is the interviewer, who thinks MUNG-YIU is very special……

TING-SZE and HO NIN lost the marketing materials that belong to WOOD-CHEUK, so they have to lie to him. WOOD-CHEUK tells them to catch a flying burglar, but on one condition that they will have to wear masks the whole night. In order to prove that WOOD-CHEUK is an immortal being, LUNG-CHU and LING-MUI purposely use real human blood to pretend there is a vampire, without knowing that a real vampire comes out to attack LING-MUI. Hunting down the vampire, YING-TIN captures him but doesn't kill him immediately, and it turns out he has other plans. LING-MUI reveals to TING-SZE and the others that WOOD-CHEUK is an immortal being, above which she even coaxes them into helping her test WOOD-CHEUK. For the bounty worth of $300,000, MUNG-NAM goes alone to hunt down the criminal, suddenly there comes a woman who even brings MUNG-NAM back home. It turns out that the criminal is in her home……

WOOD-CHEUK tells TSZ-HUNG why MUNG-NAM lost her memory, and later he shows up near MUNG-NAM's home then takes MUNG-NAM to a forest, watching fireflies together. WOOD-CHEUK also gives a major test to TING-SZE and HO NIN, and has them zip through city streets. After uncovering that WING-YEE secretly goes to visit PONG KIT, YING-TIN flies into a rage, attempting to kill WING-YEE. However, at that moment, he spots PONG KIT's sachet and cannot help recalling the bygone days. HO NIN sees TING-SZE with MUNG-YIU in a restaurant, and is overwhelmed by jealousy. The two soon pick a quarrel with each other, and even challenge one another to a duel. Creating a diversion, HO NIN goes back to somewhere near MUNG-YIU's home, where he surprisingly sees MUNG-YIU getting into the car of the president of the Thai Boxing Club. Upon her arrival at "Late My Night", MUNG-NAM sees WOOD-CHEUK fixing the exterior wall of the place……

In an effort to catch the flying burglar, TING-SZE and KOO LUK specifically purchase women's undergarments online; whereas HO YUET and the other two freak out just to see such a large number of bras. The flying burglar attacks MUNG-YIU, so HO NIN and TING-SZE vow to take revenge for MUNG-YIU. Due to a widespread power outage in town, the gates of YING-TIN's company are deactivated and all the vampires escape. Wandering the streets, PONG KIT is determined to find HO NIN, during which he runs into MUNG-YIU; whereas HO NIN is overjoyed after seeing a fan of his books come to look for him. With vampires running around causing havoc, WOOD-CHEUK notices that MUNG-NAM is on the verge of turning into a vampire because of hunger, so he immediately sends her home. TING-SZE and MUNG-YIU are enjoying stargazing on the rooftop, suddenly, LUNG-CHU shows up, advising them to leave……

PONG KIT does not want to go back, however, WING-YEE frankly discloses that YING-TIN is definitely coming to catch him. While LUNG-CHU is escorting TING-SZE and MUNG-YIU back home, he suddenly detects a strong spiritual force of evil. So he lets MUNG-YIU hide first then swiftly slashes TING-SZE's hand, using his blood to attract the vampires. PONG KIT follows HO NIN back to the martial arts school, and runs into HO YUET and LING-MUI, who are chased by vampires. The next morning, LING-MUI regrets that she didn't take a photo with the immortals; whereas the others just make fun of her. After seeing MUNG-YIU, WOOD-CHEUK not only thinks she looks familiar but also recalls the past when he was with his beloved wife……

Seeing the salt gun, WOOD-CHEUK can't help recalling those days that he spent with KAM-LING as YING YIN. Back then, YING YIN insisted on getting married with KAM-LING despite YING-TIN's reminder that they should rid the world of vampires since the gods bestowed immortality on them. After their marriage, YING YIN gave KAM-LING a silver whistle and promised to show up whenever the whistle got blown. MUNG-YIU tries her best to learn how to speak, wanting to verbally express her gratitude to MUNG-NAM on graduation day. Later on, MUNG-YIU arrives at "Late My Night", and WOOD-CHEUK cooks a meal for her, during which he keeps imagining that the one in front of him is KAM-LING. LUNG-CHU recommends a lover stone to MUNG-YIU, adding that the stone will help her have a smooth-sailing relationship with her significant other if she gives it to the one she loves……

YING-TIN's high-handed attitude infuriates PONG KIT, fortunately, WING-YEE shows up and resolves the dispute between the father and son. Ever since the widespread power outage, TING-SZE and HO NIN have been wanting WOOD-CHEUK to teach them how to catch the vampires, so WOOD-CHEUK demonstrates his coin-tossing skills. MUNG-YIU invites WOOD-CHEUK to attend her graduation ceremony, however, WOOD-CHEUK turns her down after learning that MUNG-YIU is actually MUNG-NAM's younger sister. At the graduation ceremony, TING-SZE and HO NIN give lover stones to MUNG-YIU respectively, to which MUNG-YIU does not know how to react. Suddenly, the Special Duties Unit (aka the Flying Tigers) rushes into the venue to apprehend the criminals, on the heels of which vampires out of the blue appear and kill the police officers there. Just as the vampires are about to attack MUNG-YIU, TING-SZE and HO NIN brave it out but are injured instead……

NGAI KANG, who disappeared many years ago, has become an alcoholic, and he vows to kill LING FUNG for revenge. However, WOOD-CHEUK claims to have killed LING FUNG, so NGAI KANG asks for the ring belonged to LING FUNG and continues to probe into the matter. WOOD-CHEUK explains MUNG-NAM's whereabouts to HO NIN and the others, which puts their mind at ease. After learning that WOOD-CHEUK is an immortal being, TING-SZE and the others all want him to do something that can earn money, such as taking part in TV game shows to win a big cash prize; whereas HO NIN also wants WOOD-CHEUK to teach them some extraordinary martial arts techniques. NGAI KANG puts LING FUNG's ring on his finger and then has weird dreams. He wakes up but is immediately knocked unconscious by someone who even grabs the ring. After regaining consciousness, NGAI KANG goes to meet YING-TIN and thinks that the one who knocked him unconscious should be LING FUNG……

TING-SZE and HO NIN eventually master the coin-tossing technique, so they immediately demonstrate it to MUNG-YIU. Seeing the two once again quarrel with each other over things about how to protect her, MUNG-YIU decides to open up to them. WOOD-CHEUK tells LUNG-CHU about the things with regard to NGAI KANG, and even shows him the badge. Wandering the streets, TING-SZE runs into HO YUET, who stands by his side after seeing him so preoccupied. While HO NIN is drinking alone, he hears someone screaming and as a result he saves LING-MUI. In order to help WOOD-CHEUK come up with new menu items, MUNG-YIU invents a shrimp balls deep-fryer in secret; whereas the more WOOD-CHEUK sees MUNG-YIU, the more he thinks that she looks like KAM-LING. MUNG-YIU's speaking skills just keep getting better and better, and eventually, she has enough courage, wanting to give the lover stone to WOOD-CHEUK……

Seeing HO YUET's remarkable coin-tossing skills, WOOD-CHEUK thinks she has more talent than the others in martial arts. TING-SZE finds the lover stone at the restaurant, so he immediately asks WOOD-CHEUK who gave it to him. Having learned the truth, both TING-SZE and HO NIN feel very disappointed and sad. Knowing that MUNG-YIU is in Holland, LING-MUI uses divination in an attempt to gain knowledge of her current situation. Meanwhile, WOOD-CHEUK receives a parcel from Holland, and he opens it up only to find it's a shrimp balls deep-fryer modified by MUNG-YIU. After TSZ-HUNG reveals the address of MUNG-YIU's classmate to HO NIN and the others, they decide to go to Holland in search of MUNG-YIU. Being trapped, PONG KIT can't stand the loneliness anymore so he breaks through the wall of the secret chamber and discovers LING FUNG. After he escapes, PONG KIT is fully aware that he will die soon, but he is quite content with it……

Just as HO NIN and the others are worried that they couldn't find MUNG-YIU, she shows up and tells them that she does not want to go back to Hong Kong. LING-MUI mistakenly breaks WOOD-CHEUK's spinning top, inside of which MUNG-YIU discovers a portrait and the pair in the picture look very much like WOOD-CHEUK and MUNG-YIU herself. PONG KIT keeps sucking blood on the street, and LING FUNG not only teaches him to suck blood but also urges him to create more vampires so as to wipe out the immortals. As for MUNG-YIU, she has no idea how come she bears a striking resemblance to KAM-LING, to which LING-MUI explains it's her predestination. Once again, PONG KIT runs into HO NIN, and HO NIN wants PONG KIT to give some advice about his new book, which makes PONG KIT so happy that he follows HO NIN back home. MUNG-YIU enquires with YING-TIN about things between KAM-LING and WOOD-CHEUK, so YING-TIN tells her everything……

Just as HO NIN and the others are worried that they couldn't find MUNG-YIU, she shows up and tells them that she does not want to go back to Hong Kong. LING-MUI mistakenly breaks WOOD-CHEUK's spinning top, inside of which MUNG-YIU discovers a portrait and the pair in the picture look very much like WOOD-CHEUK and MUNG-YIU herself. PONG KIT keeps sucking blood on the street, and LING FUNG not only teaches him to suck blood but also urges him to create more vampires so as to wipe out the immortals. As for MUNG-YIU, she has no idea how come she bears a striking resemblance to KAM-LING, to which LING-MUI explains it's her predestination. Once again, PONG KIT runs into HO NIN, and HO NIN wants PONG KIT to give some advice about his new book, which makes PONG KIT so happy that he follows HO NIN back home. MUNG-YIU enquires with YING-TIN about things between KAM-LING and WOOD-CHEUK, so YING-TIN tells her everything……

As soon as WOOD-CHEUK sees PONG KIT, he instantly recognizes he is YING-TIN's son, and he claims that he will not harm him as long as he does not suck human blood. WOOD-CHEUK knows everything that YING-TIN has done is for the sake of PONG KIT; whereas YING-TIN vows to cure PONG KIT no matter what, and according to him, MUNG-NAM is the vital key to the cure. When WOOD-CHEUK accompanies MUNG-YIU to watch the meteor shower, MUNG-YIU confesses her love for WOOD-CHEUK, who however still cannot accept her love. On his way home, SZE-NGA appears and tells WOOD-CHEUK that the Flying Dutchman resurfaced, making him very happy. In order for MUNG-YIU to know more things about WOOD-CHEUK, LING-MUI goes to seek aid from LUNG-CHU, from whom they learn about WOOD-CHEUK's past relationship. Having heard LUNG-CHU's explanation, MUNG-YIU comes to realise that WOOD-CHEUK has his own difficulties, but she has no idea how to solve the problem……

In order to get closer to PONG KIT, LING-MUI wants HO NIN to teach her martial arts. WOOD-CHEUK and MUNG-NAM arrive at the castle only to find out that the spring has dried up, and it turns out that YING-TIN beats them to it, and he even attempts to catch MUNG-NAM and bring her back for experiments so as to find a way to cure PONG KIT. To encourage MUNG-NAM, WOOD-CHEUK brings her back to her old residence to spend some romantic time together, but MUNG-NAM indicates that the vampires and the immortals are sworn enemies, leaving WOOD-CHEUK no other choice but to let her go. While PONG KIT and HO NIN are practising martial arts together, three vampires burst into the house to besiege and attack HO NIN. On the other hand, MUNG-YIU goes to have a word with WING-YEE, asking her how she can stay young forever……

MUNG-YIU is almost bitten by PONG-KIT, fortunately MUNG-NAM saves her in the nick of time. However, MUNG-YIU not only feels very resentful but also blames MUNG-NAM for getting in the way. In order to create opportunity for HO NIN and LING-MUI, HO YUET and TING-SZE deliberately leave the venue. After waking up, HO NIN finds himself in LING-MUI's bed. Just as he is quite bewildered by this, he is asked by LING-MUI whether he is going to take responsibility for this. At church, WOOD-CHEUK sees MUNG-NAM, who tells him that MUNG-YIU wants to become a vampire because of him. Having invented a new weapon to shoot silver balls, LUNG-CHU comes to practise with HO NIN and TING-SZE, unexpectedly, PONG KIT is shot by a silver ball. While working together, TING-SZE notices that HO NIN behaves very strangely and keeps making mistakes the whole night……

After seeing MUNG-NAM, CHI-SHING claims that he cannot figure out how come she left LING FUNG; whereas MUNG-NAM replies him that a vampire can also befriend an immortal being as long as the vampire does not suck human blood. MUNG-YIU returns home and suddenly sees LING FUNG, who reveals that he is able to turn her into a vampire immediately as long as she wants to. While HO NIN is alone at home missing LING-MUI, TING-SZE feels a flare of anger within him and goes to teach him a lesson on behalf of everyone. MUNG-YIU hopes to become a vampire. Though MUNG-NAM and WOOD-CHEUK want to stop her, they are unable to do so. Seeing LING-MUI's face glowing with happiness, LUNG-CHU senses something good is going to happen to her, and he even brings a silver ball to show it to her. LING-MUI is afraid that the silver ball will have a negative effect on her unborn baby, so she tells LUNG-CHU that she is bearing a child of a vampire……