After being invited to be a pirate by Harlock, Tadashi exits the Arcadia. At the same time, Professor Kusko deciphers the characters written on the pennant and informs the people in the Prime Minister's cabinet that the Mazone plan to make Earth their second homeland. However, the government men do not show even the slightest bit of interest in the news.

There are supposed to be forty-two crewman aboard the Arcadia. Searching their true colors, they try to read the minds of all at the Horsehead Nebula. After reading them all, they decide to take the next measures.

The operator, Kei Yuki, goes to visit her parents' grave. There, her father's ex-pupil, Kazuya, shows up. They had attempted to make a space colony not out of machines, but with nature exactly akin to Earth's. However, the experiment failed and Kazuya, the lone survivor, returned to blame her father.

Mayu, plant flowers on this burnt field. Then call the butterflies and birds back here. Daiba, make history."Harlock and his crew go for their triumphant return to Earth, but, all that awaits them is an order that they've been banished from Earth. Harlock, thinking for the young crewmembers' sake, pleads to the Prime Minister to just pardon them and to disband as pirates. However, even that plea is rejected. At that moment, all the Mazone that were lying dormant on Earth arise. Harlock realizes that the Queen hinted at this happening but it was too late, cities are laid in ruin. The Prime Minister cries for help to Harlock and they decide to have their final fight for the sake of Earth. Peace is restored. Harlock entrusts the remnants of Earth to Tadashi and the gang and once again heads for space.

The town is sent into panic by a sphere that landed. A man, who inspects the orb along with Dr. Daiba and his son Tadashi, named Professor Kusko suspects that the writing on the "Pennant" is laying claim to Earth. However, the Prime Minister continues to ignore their warnings. Then, the leader of the invading Mazone orders a subordinate to kill anyone who realizes the meaning of the pennant.

An aurora borealis of clear artificial origin disturbs the communications and electromagnetic systems of Arcadia, at the North Pole a strange being that carries out Rafflesia's commands manages to get Arcadia stuck in the middle of the eternal ice: Kirita tries to take advantage of the situation but his bombing only helps Harlock's spaceship free itself.

Dr. Zero analyzes the hair from the captured Mazone and sees their make-up is identical to sap found in plant life surrounding ancient ruins. Feeling the need to investigate this association, Harlock sends out Tadashi and First mate Yattaran to retrieve the Flame Vessel.

When a man is searching for his final resting ground, don't go running your mouth."Commander Kiruta learns of the existence of the Mazone and persistently tries to inform the Prime Minister of the impending doom. Nevertheless, the Prime Minister ignores his pleas and begins to think of Kiruta as a dangerous person who may pull off a coup d'?tat. Then, Kiruta encounters Commander Otawara in a drinking establishment once again. He was the former commander who was accused of being a murderer after killing his wife upon finding out she was a Mazone. Learning of the Mazone invasion, Otawara leaves in a fighter all alone and makes contact with the Arcadia. He then leaves his final parting words to his former lover, whom he broke up with due to a misunderstanding, Masu-san. He then charges into the Mazone's crosshairs. Harlock is impressed with Otawara and vows once again to rescue Mayu.

I want to make a flower bloom. A flower of the future."Making its way past countless gunshots, the Arcadia finally arrives at Queen Lafresia's flagship. The crew sans First mate Yattaran makes a full assault on the ship. Harlock then confronts Queen Lafresia, who is wearing a battle uniform. They clash swords as she furiously battles the man who trying to crush her dream. Then, Harlock's friend who is in the Arcadia helps Harlock to victory. When Harlock sees the red blood flowing from Lafresia's veins, he decides to let her and the Mazone go. However, her final words are "I will leave”.

2977 A.D. Mankind has developed the technology to head into space. They've created robots to cultivate foodstuffs on other planets and live in an age of unprecedented gluttony. Mankind receives all its food from the government and is kept in check by the government's use of hypnotic signals emitted from the television. Even high-ranking government officials have tossed their duties to the road and live a life of horse-racing and other indulgences. Captain Harlock, a space pirate known throughout Earth, is the only man who sees the impending crisis approaching. The only men who heed Harlock's words are the members of his crew on the space ship Arcadia.

Harlock tells Tadashi, upon joining his crew, to "just loiter around and enjoy it," leaving Tadashi confused. Also seeing all the crewmen merely doing as they fit and slacking off goes completely against the image he had of the Arcadia. Being stuck in such a confined space causes some mental effects on Tadashi. In that state, he sees visions of his mother who died on Neptune's satellite, Triton.

I want to have a drink with you. Once the battle is ended."After a bunch of skirmishes, the true battle finally begins. The Mazone use an underhanded tactic by camouflaging a medic ship and sneaking in to attack. Harlock then rescues a pregnant woman from a civilian ship that they accidentally attack. As this is more important than being friend or foe, they ignore the Queen's orders for the time being. Neither party attacks until the baby is safely born. Seeing this side of Harlock for the first time, the Queen decides to stop the petty tricks and to fight Harlock directly.

Upon finding a message in a bottle floating in space that contains an SOS message from Captain Yamanaka of the Braves ship, the Arcadia sets off for the Horsehead Nebula.

The Arcadia successfully makes its way to Venus. Along the way, they capture a Mazone pilot from a wrecked ship, Lola. Instead of detonating herself like the others, she just gives an ominous smile. Harlock orders Tadashi to keep an eye on her. Taking one glance at her, Tadashi becomes bloodlust and wants to kill her. However, shy hypnotizes Tadashi with visions of his late mother. Asides for foolishly divulging information on the Arcadia to her, he lets her ...

You have awakened the lion that sleeps within me."Due to Harlock's unrelenting resistance, there is a growing resentment between the Mazone military and its civilians. There is a faction in the military saying the civilians are just a nuisance and should be cut off. But the queen has resigned herself to complete the exodus of all her peoples to Earth. When Tesius breaks away from the caravan with a group of Mazone, the queen sends her subordinate Cleo to deliver her punishment. She lets Tesius commit suicide rather than kill her...

Have a drink and talk to me. Sometimes people need to clear the air between them."The Arcadia leaves for space with Kiruta on board, after he was injured while trying to save Mayu. Before the final showdown, Kiruta confesses his true feelings to Harlock. About how he rescued a bunch of juvenile delinquents who were branded criminals, and how he wanted to create a future for them. He then drums up the courage to ferociously fight and closely battles with Mazone who board the ship. He then sacrifices himself to put up a defense and to protect Tadashi and First mate, Yattaran. Harlock buries him with respect.

A transport ship unit is attacked by an unidentified flying object as it exits Planet No.7. Believing Harlock is behind this attack, they decide to use Mayu, a girl entrusted to Harlock by his dear friend, to lure him out. Harlock and his crew experience the first aggressive attack by a mysterious enemy known as the Mazone. Realizing they are under attack, Dr. Daiba and his son, Tadashi, go to the Prime Minister's residence to plead with the Prime Minster.

he operator, Kei Yuki, goes to visit her parents' grave. There, her father's ex-pupil, Kazuya, shows up. They had attempted to make a space colony not out of machines, but with nature exactly akin to Earth's. However, the experiment failed and Kazuya, the lone survivor, returned to blame her father who had lost his life there. But now he regrets this and wants to continue the research

Harlock is studying the precious news left to him by Goram regarding the composition of the Mazonian fleet. Rafflesia has caused a pennant to fall onto the surface of Mars coming from the Andromeda Nebula: Arcadia sets off to meet the enemy.

Zol issued the attack order! Your father!"A surprising couple, Zorba, the son of the warrior Zol, and a Mazone medic named Lucia, escaped from the Mazone fleet. There are members in the crew who doubt Lucia and think she may be a spy, but when they see that the Mazone are truly trying to recovery the two, they begin to trust her. Then the Mazone launch their general attack. Zorba is upset over his mother's execution, but Harlock yells at him and he become brave again. He decides to use himself as a decoy to protect the Arcadia. The two of them are hit by the Mazone and they sparkle off almost like a shooting star.

Earth is meaningless to me without Mayu."The Mazone plot to use Mayu to lure Harlock and the Arcadia to the Wind Planet and then attack with a powerful mine. As the Arcadia is making up its mind as to where they will go, they intercept a communication saying that the Mazone have sent advance troops to Earth. The crew asks Harlock if they can return to Earth. As Harlock is pondering what to do, the sound of Mayu's ocarina ominously comes to them from the Wind Planet, so they set their course to there. Thanks to the will of Tochiro, which remains on board the Arcadia, they are able to escape the Mazone's trap. Just as it looks like they will succeed in rescuing Mayu, she is whisked away to another planet.

This is a gamble. But it's a gamble we will win."Doctor Zero becomes extremely resentful over Zorba and Lucia's murder. So, he sets off to do battle in the midst of a magnetic storm and leaves his pet cat to the ship's cook, Masu-san. He leaves alone in a fighter. Then, with the cat who snuck into the cockpit when he wasn't looking, he prepares for death in a violent dogfight. Shortly after, Tadashi informs Harlock that the Mazone mothership he shot down was actually a passenger ship. The Mazone are not just plotting an invasion but are on a mass exodus in search of a new home!

Queen Lafresia is a Mazone with a heart."Having a hunch as to the reason why Harlock so staunchly opposes them, Queen Lafresia sends someone on a mission to Earth to find out why. They threaten Commander Kiruta and find out about Mayu. Finally believing the warnings about the Mazone that Harlock spoke of, Kiruta pleads to the Prime Minister to defend the Earth. But the Prime Minister does not deem the Mazone a threat. Kiruta finally understands Harlock's impatience with him. Then, after appearing in front of Harlock via hologram, Queen Lafresia is called a coward by Harlock. Then she makes up her mind to kidnap Mayu. She is taken away from Kiruta, who was protecting her, by a Mazone.

Believing that all the jungles of Earth are inhabited by the Mazone, Harlock decides to return to the Pirate Island again. There, after a subordinate of hers was killed in South America, Alergias wages an attack on Harlock.

Arcadia, having returned to the interior of the solar system, is now located near Jupiter (astronomy); strange beings, who however immediately reveal themselves not to be Mazonians, attack her. Tadashi manages to capture alive Captain Goram (Zoru), belonging to the army of Tobaga, a small planet located in the main asteroid belt orbiting between Jupiter and Mars (planet).