Tooru Amuro witnesses a woman pushed from the top of the stairs at Haido Park. However, he doesn't see the culprit's face. The unconscious and gravely injured woman pushed from the stairs is Jodie Starling's friend and Haido Elementary School teacher Natsuko Shibuya. Conan and Jodie head to the park and determine Natsuko was attacked somewhere else, and it soon becomes clear she was assaulted at the school. Later, Megure and the police question her coworker Yoshiharu Sugamoto, who tried to give Natsuko a ride home, and Akiyo Ueno and Fumiyuki Kandachi, parents of students who had appointments to see Natsuko.

The police review a photo of the answer sheets Natsuko was grading. Jodie and Camel fail to discover any information that could help them solve the crime from the photo, but Amuro and Conan realize who the culprit is after seeing the picture.

When Conan hears Camel's story, he realizes Vermouth disguised herself as Jodie and spoke with him. Conan is frustrated that he acted just as Bourbon (Amuro) and Vermouth planned. Amuro meets with Vermouth, who is still disguised as Jodie. She informs him she learned from Camel that Kusuda shot himself. Amuro responds that there was another burned man who was shot in the head when Kusuda disappeared. With thoughts of FBI agent Akai Shuichi on his mind, Amuro deduces that Akai is still alive.

Amuro visits Okiya at his home and begins explaining how one corpse was swapped out for another. The suspected corpse, Shuichi Akai, was shot in the head and burned along with his car at Raiha Pass. However, Amuro believes Akai switched his own body out for Kusuda's and is in fact still alive. Amuro explains Akai's trick step by step to Okiya. Meanwhile, Jodie was thinking the same thing as Amuro. Amuro reasons the body swap was planned not by Akai but by Conan. Amuro then asks Okiya to remove his mask. He is certain Okiya is Akai, but..

Akai suddenly appears in the back seat of Jodie's car and fires at the secret police's vehicles. The bullet strikes a tire, and the FBI agents successfully shake off the secret police. Meanwhile, at the Kudo family home Amuro's subordinates inform him Akai shot out a tire, causing their cars to crash. Later, Jodie's car returns to the crash site. Akai takes a cell phone from the secret police and begins speaking to Amuro (Bourbon). He tells him it was a mistake to let Conan know he had the nickname Zero. Akai knew who Amuro truly was...

Sonoko's acquaintance Chikada Eimi of Orihime Club invites her to investigate pranks, to which Ran and Conan get dragged along. Before each prank, warning letters are sent to Club Orihime warning them of the pranks. That morning they received a letter stating, "EC will be brought to justice!" The letters are the initials of the victim. At the scene of the crime, they find a new letter stating, "TB dies as sundown tonight!" Only two hours remain until sunset. To prevent another incident from occurring, Conan and his friends search for a student with the initials TB.

Shukichi Haneda is at Tokiwa Hot Springs, preparing for his shogi match for the title of Meijin. As he was talking to two women, a picture of Yumi Miyamoto fell out of his robe. When he picked up the photo, he thought back to two days ago, when Yumi told him she already through away the envelope he asked her to not open until he obtains all seven because he never called her ever since he gave it to her. After that small conversation, she stormed out of the cafe, where they were talking; when he came out, she was nowhere to be seen. As he tries to find her, a stranger watches him in a car, carrying an evil smile.

During his Meijin title match, Haneda Shukichi receives a threatening letter from a man calling himself the Headless Shogi Player who claims to have kidnapped his girlfriend Yumi. Conan solves the second game's code and arrives at a grave on Yureizaka.

Kogoro is at Nichiuri TV Office, filming "Detective VS Weather Reporter" with Yasumi Sekine while Conan and Ran watch at the sidelines with Yukio Kodama, Takuya Yamaguchi, and Hiroko Shinohara. After the filming, Kogoro and Ran rest in a room while Conan goes to a vending machine to buy a bottle of oolong tea. As he picks up the bottle, he notices Yasumi and Yukio conversing secretly; after the small talk, they head out and split off. Then, Takuya hesitantly comes out of a room and follows Yasumi, and Conan follows him. Yasumi meets with Hiroko, who tells her the stage is good and ready. Hiroko asks her if she wanted to check the stage, but she said no because she trusted her.

Conan and his friends go to a hotel pool where Nagami, daughter of the president of Oiso Finance, drowns to death. She had been wearing a diving tank and searching the pool for her lost necklace. Based on the crime scene, Inspector Megure believes it may have been an accident. However, the hotel bellboys claim the body in the pool suddenly appeared.

Nagami's body is discovered in the hotel pool. Megure questions Samaki, Hamaka, and Toyoshima regarding the actions they took after they left Nagami alone in the pool. The bellboys describe the situation at the pool while they were searching for Nagami, leading Conan and Sera to investigate the pool and discover which of her three acquaintances murdered her. They reproduce the manner in which the body disappeared in an experiment, bringing them closer to the culprit...

Supermarket Beikado employee Kanzaki receives death threats over the phone. He hires Kogoro to investigate the threats, but Kogoro believes it to be a prank played by a friend. However, an incident occurs the following day on Sunday...

Conan, Ran, and Kogoro are having dinner at Restaurant Danny's when they witness Ryuta Someya punch Yasuo Nashimoto in the face. Kogoro calls the police while Ryuta flees from the restaurant.

Conan asks Haibara to give him information about Rum, the new Black Organization member who is on the move. She says she doesn't know much about him, but she knows that the descriptions about Rum are always different. Some people say Rum looks feminine, others say he looks like a well-built man, and some describe him as an old man. However, there is a common characteristic about him that she can't recall. The Detective Boys end up involved in a case again and the three suspects fit each one of the descriptions about Rum.

Conan helps the police solve the case and reveals the truth behind it. The Detective Boys leave the crime scene and Ai Haibara has remembered this common feature about Rum that everyone who has met him agrees on.

Kogoro, Conan, and Ran accompany actresses Haneki Ryo and Sawazaki Reina to the on-location shoot of their gourmet travels TV show. After several attempts on her life, Kogoro is hired to protect Ryo as her bodyguard and determine who is trying to kill her.

While humming the song "Nazo", Ayumi jogs toward school, but as she passes by the Makabe residence, she sees a man carrying a woman. Both people look injured, and Ayumi, peeking through the bushes, believes the man killed the woman.

Chosaku Kanbayashi was found dead on the ground after apparently falling from his office window.

A weird girl who calls herself Funachi meets with Kogoro to get his help to find a missing person. But Kogoro declines her request, so Conan decides to help her instead. Funachi and Conan work together to find a missing person named Hikone who apparently resembles a hero in an otaku game.

A drunken man was saved by Conan when he fell from the top of a building, before the man hit the other person who is standing right below the place where the man fell. It seems the man committed suicide, but the evidence lead Conan to think that someone else caused the man to fall.

One morning, the Detective Boys are on their way to an abandoned building lot which Professor Agasa has managed to loan from a wealthy acquaintance, in order to practice their soccer skills for an upcoming school match. The lot is located next to an eight-story building and was formerly the site of a mansion that is already torn down, with only a family-sized pool and a shed remaining. However, when they arrive at the lot, they find the grounds crowded by the police: A body has been found in the pool.

The police (Inspector Megure, Detective Sato, and some others), dressed in Cheetah Delivery uniforms, Kogoro, and Conan are at the Saekis' house, ready to carry out the plan to catch Reina's kidnapper. Before the housekeeper, Suzuko Tanaka, sets out to deliver 100 million yen of ransom to the kidnapper, Conan sneakily places a transmitter on the her sleeve.

Kogoro takes Ran and Conan to Tottori prefecture to come up with a story for the first Super Mystery Award. He brings them to Tottori Sand Dunes, ties up Conan, and throws him down, because he wants to write a story of how a kid who is tied up and abandoned at the sand dunes escapes from danger; in other words, he is using Conan to find inspiration. However, since this place has numerous tourists, someone is definitely bound to save any kid in that situation. As a result, he gives up on that story and that award, and they go sightseeing instead.

While Kogoro and the police detectives continue to investigate the alibis of every family member, Conan and Ran head to Nashikkokan to gather information on Naomi Senda, who they think is suspicious, from her uncle, Kozo Adachi. After a bit of investigation, the three of them realize the truth behind the robbery.

Arsons have been occurring at different children's playgrounds. The Detective Boys, accompanied by firefighters, go on a fire safety patrol. A man is seen running past them toward the direction of fire and Genta knows who he is. The Detective Boys try to find evidence to prove that the man is the arsonist.

Conan prevents an accident involving a out-of-control car with no working breaks. Someone poked holes in the brake hose, and the police investigate the incident as an attempted murder. The driver Hosoo was on his way to deliver a valuable double-sided mask to Ichikawa Ebizo, who is rehearsing at the kabuki theater. Ebizo plans to use the mask at next month's performance of "Nanatsu Men."

While on his way to meet Kaneko, Conan is kidnapped! Conan awakens in the dark basement of a building being demolished. Realizing he doesn't have his phone, he attempts to use his Detective Boys badge to call for help, but there is no answer.

The ventriloquist Tengan puts on a show about a ventriloquist who becomes possessed by his doll and murders his wife. Tengan falls victim to a genuine split personality disorder, and the personality of his doll appears and orders him to kill his wife Kazuko. The next morning, Kazuko is found murdered. Tengan confesses...

Ventriloquist Tengan's wife Kazuko is bludgeoned to death with a trophy. Afflicted by multiple personality disorder, Tengan confesses that he may have killed her while he was unaware, but based on the circumstances, Tengan's apprentice Togawa, who was having an affair with Kazuko, rises as a suspect. Conan feels as though something is wrong with the case and investigates Tengan's home with Detective Takagi. He examines the sideboard where the trophies are displayed and realizes what has been bothering him. Later, Conan asks Takagi some questions and closes in on the truth behind the case..

Conan, Ran, Kogoro, Heiji and Kazuka visit an inn deep in the mountains of Nagano. Heiji acquires a photo of a figure carrying a scythe running across the surface of the inn's outdoor bath. Conan and his friends have come to investigate the identity of this figure who resembles a kamaitachi, a supernatural demon. At the inn they meet writers Daigo Nakama and Midori Koyanagi, who have come to gather information on the incident as well. While searching inside a dark storehouse, Heiji, Kogoro and Koyanagi are attacked.

As incidents thought to be the work of the kamaitachi demon occur one after another, the innkeeper's father-in-law, Bonzo Ohno, is murdered in the annex of the inn. Based on the crime scene, Heiji believes the culprit came to the annex through the outdoor bath. However, the snow around the bath is undisturbed, meaning the culprit could only have run across the bath's surface. After hearing everyone's testimony, Conan and Heiji realize who the culprit is from a casual remark.

Kogoro, Conan, and Ran are visiting Nagano Prefecture when they run into Inspector Yamato and his associates of the Nagano Prefectural Police. Conan and his friends visit the Kansuke Shrine ruins and Yamamoto Kansuke's grave. While visiting the Chikumagawa River, their final destination, Inspector Shigeru Takeda's severed head is found in the river. On the body's forehead is a mark resembling a woodpecker's footprint. Allegedly, a mysterious group known as the Woodpecker Society exists in the Nagano Prefectural Police. Yamato and his associates search for someone who may have borne a grudge against Takeda when two cases involving Takeda resurface.

Police Lt. Shoji Kano is found dead in his home. From the body's condition, Inspector Morofushi reasons that after being strangled, Kano was hung from the ceiling. Later, the culprit sends an e-mail declaring that he will kill three additional people. Sgt. Shinsuke Akiyama is called to Mt. Saijozan by the culprit and is murdered. Inspector Yamato's fingerprints are found on the rope that was wrapped around Kano's neck, so Section One Chief Kuroda puts out a BOLO for Yamato as the suspect.

Members of the Nagano Prefectural Police are killed one after another. After observing the crime scenes, Section One Chief Kuroda puts out a BOLO for Inspector Yamato as the murderer of the three men.

In the morning, Conan notices a suspicious man watching Amuro at the Cafe. Later, on his way home from school, he spots the same man. Believing something must be up if Conan is interested in him, Mitsuhiko, Genta, and Ayumi follow the man. Conan warns Amuro that the man may be a member of the Black Organization...

Professor Agasa takes the Detective Boys to a cake buffet in a hotel, where they meet Saya Kitami and Kyona Shono, two rival actresses who are filming a drama. Kyona asks Saya if she's seen her blog and warns her that she should surrender if she doesn't want to have her secret exposed. Conan checks Kyona's blog but is unable to determine what the secret is. Later, Kyona is found murdered in her locked hotel room.

Kyona is found murdered in her locked hotel room. Based on their hatred for each other, in addition to Saya's actions, Conan believes she is the culprit. Conan remembers what Kyona said previously about Saya’s secret and tries to uncover it from her blog. After talking with the Detective Boys, he figures out the trick to the locked room!

Unemployed man Hanzaki Yasuo slips and falls to his death after he sees office worker Takedera Hitoshi wearing an alien costume. After questioning Takedera's three acquaintances who witnessed the incident, the Detective Boys investigate and close in on the truth.

A man comes to Kogoro for him in locating his missing fiancée. Kogoro narrows down the list of suspects, but Conan believes that the case was too easy to resolve.