Conan quickly figures out the complicated method the arsonist used to torch the house, as well as the motive behind it. But after the case is solved, Jimmy is in for an embarrassing surprise of his own.

Ran and Sonoko are on their way to a restaurant when Chie Yoshino allegedly falls asleep in her car but nearly misses them at the last moment. They soon meet Akio, Chie’s husband, but Ran finds his actions suspicious.

Tatsuo Mori, a Mori Kogoro impersonator, arrives at the Aoiya Hotel near a creepy forest where he is invited to investigate a case where a long-haired man is said to have committed suicide 4-5 years ago.

After analyzing the clues and facts, Conan is convinced that the long-haired man and Tatsuo were murdered.

Conan, Kogoro and Ran all go to an isolated mansion called the Sunflower building because every 12 hours it rotates. They are having a BBQ outside while the owner is inside when they hear a shot fired. They rush inside to find the owner shot through the forehead.

Professor Agasa takes the Detective Boys and Conan at the beach during school break while Ran and Sonoko also happen to be on the exact beach. At night, all of them ate dinner in a hotel together with the lifeguards they met that morning. The man the lifeguards were supposed to meet didn't show up so they tried calling him but the only sound that could be heard was the sound of the waves.

Conan figures out the culprit and decides to use Professor Agasa's voice to reveal the trick but remembers he forgot his voice changing bow tie at the hotel.

While Conan, Ran and Kogoro are going sightseeing, the village head is killed by the somebody who visited the village head before post office lady.

Ran and Kogoro get an invitation for an engagement party from his favorite idol Youko-chan. Kaoru the one who is getting engaged is another star and a former member of a group they all used to be in. She is a fan of Kogoro and wanted him to find out who was stalking her.

Megure searches everyone for the murder weapon but it isn't found. Though they discover a listening device and find drawers tampered with.

Because of Kogoro's love of horses he takes Conan and Ran to an OK corral ranch. One of their prize winning horses gets spooked and they all go running after her. They reach the horse and Conan finds blood on her horseshoe. They then find the farrier; one who shoes the horses, murdered.

Conan and the Detective Boys find out about a kidnapping case and decide to investigate.

Satou is having an arranged marriage meeting with a man due to her mother's persistence. She arrives to find out it's Ninzaburo Shiratori. She proposes that if Takagi does not arrive to her before sunset, she will marry him whether she wants to or not. He accepts, but Takagi is busy with a store robbery.

Takagi solves the case and arrests the culprit when he tries to make a dash out of the police car. Takagi catches up and gives up on going to Simone in time to stop the marriage as the sun is almost set and the car is too far away.

Kogoro wins a trip to Matsue from a lottery drawing, and while there they meet and join up with a Linked Verse group, which is a type of poetry. One of their members, a loan dealer, is killed, and Conan finds out that almost everyone has a motive to kill.

Conan hasn't figured out who the culprit is, so he gets Kogoro to participate in their Linked Verse Contest so he can have more time to observe the suspects.

Conan and the Detective Boys are out walking around the town the morning after an earthquake when they hear a scream. They see a woman cradling a man bleeding, and they call an ambulance and the man is saved. He says he was robbed and 200,000 yen ($2,000) was stolen from. They have a suspect, but he has an alibi of committing another crime when the man was attacked.

The Detective Boys attend an animal show involving a white lion named Leon. Outside, a man named James Black, is mistaken by reporters for Randy Hawks, a rich man who sponsors zoos and animal shows. The Detective Boys lead him out of the crowd of reporters by pretending he is their English Teacher. As return for their help, Black offers to treat them for lunch and leaves to get his car, only to be mistaken for Hawks and kidnapped for ransom

Ayumi notices that Black still has her Detective Badge, allowing Conan to trace the signal and have Sato set up a road block intercepting the vehicle.

Conan, Kogoro, and Ran go to a restaurant that is shaking because of construction next door. They go back the next day only to find that the man running the restaurant is dead. At first it looks like the construction made a vase fall over and hit him on the head, killing the owner, however, the construction wasn't happening at the estimated time of death.

Conan, Kogoro, and Ran are driving to a hot spring when the road gets closed due to snow, and so they accept an offer of staying the night at a nearby house. The next day they discover the body of the company president dead and when they follow the footprints, they find his eldest son dressed up in armor and also dead in a locked room.

During the informal investigation, Conan discovers that the footprints of the armor in the snow were used to cover up the culprit's footprints, and finds that the locked room the son died in was set up.

Heiji invites Conan to his kendo tournament.

Eri Kisaki is the attorney for a man named Shinji Usami who is convicted for the murder of Tsuyoshi Hirasawa while in a drunken state. On the prosecution side is her rival, Reiko Kujo, dubbed “The Madonna of Prosecutors. During the hearing, Reiko calls Kogoro to the witness stand, leaving Eri baffled and Conan concerned.

Conan explains that Reiko is taking advantage of Eri’s history with Kogoro by using him on her side. Kameda confesses to changing the time on Kogoro’s phone, thus destroying Shinji’s alibi.