Conan becomes suspicious of Kogoro's latest client, a woman looking for an old lover, even more so when a murdered man is found clutching a photo of her.

After a thorough investigation, Conan tranquilizes Kogoro and reveals the culprit.

Conan, along with Heiji, Ran, and Kazuha travel the Isle of Mermaids looking for Saori Kadowaki, who had sent a letter to Heiji asking him to save her from being killed by a mermaid.

Conan and Heiji investigate Naoko's brutal murder and discover a trail of fish scales that suggest Naoko's killer came from the sea.

With Kogoro stunned, Conan clears the suspects who were accused of murder, then explains that each victim was called out by the person they trusted and was lured with the promise of a personal gain before being murdered, and reveals the killer.

A boy named Rintaro asks the Detective Boys to investigate on a strange man named Yuuji Kamekura. Rintaro explains that Yuuji appeared one day at his family restaurant claiming he owes Rintaro's grandfather a favor and would like to work at the restaurant. Yuuji soon after begins living with the family and helps them improve the restaurant to the point the family are constantly busy with the customers.

Sonoko, Ran, and Conan are at the arcade where they meet their high school English teacher, Jodie Starling who is an avid gamer. Jodie introduces Ran to a virtual reality fighting game which uses mechanics to simulate the pain of a real fight. Ran loses to a gamer named Kengo Bitou who taunts her in her lost. Bitou plays the game again his rival, Takayasu Shimizu; The battle is projected on a large screen. Bitou's avatar overwhelms Shimizu's but stops at the climax of the match. The people in the arcade realize Bitou is dead and the police are called in.

Conan investigates and learns the method and the culprit who murdered Bitou.

Ran, Sonoko, and Conan attend Muneyuki Mino's pottery class to make pretty mugs. Muneyuki is pleased to see Ran as her father Kogoro solved a murder case at The Forgemaster's estate. Later on, Muneyuki displays a dark personality.

Conan finds something suspicious about the pendant on the necktie and figures out Muneyuki and his methods.

Conan and the Detective Boys are taking the transit bus to a ski resort where they meet Araide and Jodie aboard the bus. Soon after, the bus is hijacked by two armed men who uses the passengers as hostages and demands the city to release their boss.

Conan figures out who the accomplice is. The Detective Boys are able to inform the driver to stop suddenly which allows Conan to apprehend the criminals.

Mouri Kogoro accepts a case to help to find out who has been sending threatening phone calls and letters to a man named Mitsuo Yoshimura. On the way to Yoshimura's apartment with his friend Joji Ueda, Kogoro and Conan witness Yoshimura fall to his death.

Agasa takes the Detective Boys to a neighbor named Teruya Kanou who is giving away his belongings before moving to England. While there Kanou's Papillon goes missing when the longcase clock strikes twelve and chimes twelve times.

Conan notices that there is glass wool, which muffles sound, in the incinerator and realizes who the culprit is.

Kogoro, Ran, and Conan are invited to a private party by a President of a financial business, who is known for his expensive collection and various tastes in wine.

Ran, Kogoro, and Conan go to Shirahama on a vacation they won from a shopping district lottery, and there meet a group of college students named Maki Shinjou, Tatsuhiko Yura, Madoka Mitsui, Kanako Miyahara, and Kouta Fuji. They are all in the same art club, but don't seem to get along well.

Conan investigates and finds out that Madoka was cheating on her boyfriend with another student, Fuji, but that none of them committed the murder.

Heiji invites Kogoro, Ran, and Conan to a celebration of the opening of the 3K restaurant by three American celebrities, a heavyweight boxing champion named Ricardo Barreira, a Major League Baseball player named Mike Norwood, and the pro soccer player known named Ray Curtis who Conan admires.

As Heiji is investigating the rooms, Conan suddenly appears and talks to him about that all three sport celebrities are all innocent.

While traveling home on the Shinkansen from Osaka, Conan, Ran and Kogoro ran into Officer Satou and Takagi, who were transporting a criminal. Later, a bomb was found on the train that Officer Satou went to investigate.

From the crime scene, Conan found a suspicious thing that makes the scene as the place of homicide. During the investigation, Conan observes three suspects. Conan points out the suspects of who the murderer is. After investigating and finding clues, Conan reveals the culprit.

Genta has been acting weird at school lately. The Detective Boys learns that he is being targeted by a killer. Genta tries to remember where he sees the killer.

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.