The anime special celebrates the 20th anniversary of Gosho Aoyama's original manga, and it recounts a previously untold story from Conan's past.

After Akiyama is attacked, Ran accompanies to her to the hospital. Kogoro and the others continue investigating the checkpoints. After arriving at the museum, Conan checks the four cards that fell out of Akiyama's bag.

Conan, Kogoro, and Ran take a trip to Ishikawa Prefecture's Kanazawa to meet with a tourism agency. They have asked for Kogoro's help with the Kaga Hyakumangoku Mystery Tour city revitalization event to be held in the Kanazawa.

Author Keigo Hiura's assistant Chiaki Minazuki is found strangled to death in a hotel room directly below his. Conan and Sera are certain he committed the crime, but cannot find a hole in his alibi. After learning of the condition of Minazuki's room they get closer to the truth. After seeing and hearing more, Conan and Sera realize how Hiura manipulated his alibi...

Conan, Ran, and Sonoko visit the hotel room where Masumi Sera is living. In the hallway on the 30th floor of Sera's hotel, various editors wait for famous romance author Hiura Keigo to finish his manuscripts. Later, Hiura's assistant Minazuki Chiori is found murdered in the room directly below Hiura's.

Conan and Kogoro feel something is wrong with DoDonPa's all too convenient alibi. After taking on the guilt for a murder he didn't commit, DoDonPa becomes the man of the hour for trying to protect the reputation of his benefactor Tendo. Conan begins to strongly suspect him.

After an unlucky while at the pachinko salon, Kogoro who walks about sees Conan at a small police office near a train-station. He walks in angrily only to find out that Conan was there only to return a found wallet. As they are about to leave the well-known comedian Rokusuke DoDonPa (real name: Rokusuke Tanigaki) walks in and announces to have murdered his chief.

A search is conducted they don't find any knife-like objects or wigs. A woman is seen lurking outside again. The group checks some pictures which point to the red hints of all the previous 'pranks'. In one the pictures, Yui points out that on the day she was found she was wearing a red coat. She notices the ones who found the knife 3 years ago were Kansuke Yamato and Taka'aki Morofushi, while they were still attending police academy. Morofushi was sure that the bones which were found belonged to the red woman, while Yamato refused to accept it.

Yui Uehara of the Nagano police arrives and learns of the murder case and details, such as the fact that no blood traces where found in the bathroom. As the other guests are in distraught over Masaie's death, their whereabouts are told to the detective. Why were tomatoes floating in the bathtub?

Conan, Ran, Sonoko and Sera are walking through the woods as Sera explains the reason for their excursion, that she has been asked by her brother to visit his former classmates in order to solve a case.

Just as Ran was about to leave, Hidehisa cries out from the 1st floor as he finds the victim, Katsuko Kanou, murdered on her bed.

After unlocking the door, Conan runs into the bedroom to find Teishi barely breathing after apparently falling off a chair and hitting his head while fixing a light, but something doesn't seem quite right.

Three different people have come forward claiming Taii belongs to them. Now it's up to the group to determine who is telling the truth.

When Koutarou jumped into the ocean he suddenly was unable to swim and began drowning, eventually passing away at the hospital.

The mystery unveils revenge against a stalker! Who is the culprit?

A man was found murdered inside on his apartment! What love story will continue to develop among the Metropolitan police this time?!

Jirokichi learns of Makoto's victory record and swiftly changes his mind about the young man's offer and sends a demonstration video to Superintendent Chaki and Inspector Nakamori. However, amidst the slack-jawed policemen witnessing Makoto's fighting prowess lurks Kaitou Kid in disguise, who merely shows amusement at this new, if unusual challenge.

Sonoko has decided to introduce Makoto to her parents. But while her father wholly approves of Makoto, especially as he is a fan of martial arts competitions himself, her mother in turn is strictly against a union between her younger daughter, as the prospective heir of the Suzuki Corporation, and an (in her eyes) uneducated, fight-obsessed never-do-wel.

Sunami discovered the missing Tanba in the toilet in the parking lot of the bowling center. When Sera and Conan examine the body they're surprised to see the cause of death is drowning.

The missing teacher, Masahiro Tanba, is found in the toilet, apparently drowned. Makoto Kyogoku becomes the prime suspect as the culprit is likely to have carried the victim to the toilet after drowning him.

Hearing a woman's scream, Kogoro, Ran, and Conan run towards the sound and come across a man sitting on the ground. After accusing the man of being the Hooded Man, Conan discovers Mizuki on the floor inside the room behind the man.

While practicing penalty kicks, Sanada's soccer ball accidentally hits Kou while he's riding his bike past the park, injuring Kou's ankle. Kou is upset and makes Sanada promise to play his next match and score a goal using his right leg.

Ran has to open Waka's apartment with a key when no one answers. Later, Ran finds Waka on the bathroom floor, but she collapses herself due to chlorofoam in the air.

As Conan and Ran are waiting for a meeting with Eri, they meet Sera, who is investigating Rumi Kitao's boyfriend, Kenya Settsu, about adultery.

Kogoro is undercover at the Blue Parrot, because Yuzuki Fukui asked him to investigate on a weird sound she hears frequently. Conan joins him, saying that Ran is angry because Kogoro is not home. But a simple investigation in a bar becomes more dramatic when Chikafumi Usuda, an office worker, is found dead.

Fukui is a beautiful woman bartender. Kogoro receives a request from her to investigate a strange sound because at the store and what's the reason behind it.

Conan and his friends were playing Frisbee at the park, when a dog named Matsunosuke launched off of Conan's head and caught the Frisbee. Matsunosuke's owner, Kanae Asakawa, apologized and took Conan's jacket in order to get it cleaned after Matsunosuke left dirt all over it. The next day when Conan and the Detective Boys arrived at her house to get the jacket they met Kanae's friend Tomoko and see Matsunosuke in his dog house, asleep.

After hearing Kataoka scream, Conan, Ran, and Seiya head in the direction of the sound to find Sada holding the deceased Kataoka. It appears Kataoka died after receiving blunt force trauma from falling off a ladder.

Conan figures out Kaori's real home phone number and calls it. He's surprised when Sato begins talking to him on the phone and the group discovers that a gun (a Nambu Taisho 14) is missing from Kaori's home

Professor Agasa called Conan over the phone to tell him he'd witnessed someone being hit repeatedly on the shrine grounds.

Two chefs ran into the reception saying Masaru had been found lying dead on the ground due to a gunshot.

Conan pieces all the clues together: the suicide note with somewhat strange contents, Shukichi Haneda mentioning a "well-prepared move", same phone models of all the family members, the trick behind the bedroom door closing upon Sakurako and the victim's husband entering the room, and the victim's phone on the floor.

Conan and the Detective Boys run into Naeko Miike and Yumi Miyamoto, who were talking about Yumi's ex-boyfriend. Naeko Miike shortly receives a call from her acquaintance, Sakurako Yonehara, about a dead body

Upon hearing a woman scream, Conan and the Detective Boys rush into a room to find Kitajima lying dead on the floor from a stab wound.

Mouri Kogoro, Ran, and Conan watching the ending of an old movie staring retired actress Misuzu Shirakawa at the actress's home. As the trio tour the home with the actress, her three children, and the maid, they are surprised to witness consistent quarreling in the household with Misuzu Shirakawa being the unpleasant one. As the afternoon draws close, the actress retires to her bedroom for an afternoon nap, a car accident occurs outside, and then smoke emerges from the bedroom.

Shoutoku was murdered! The police, Kogoro, Conan, Masumi watch the surveillance room, where they see Shoutoku enter the storeroom last night at 9:05. They identify three people who were the only ones that had a chance to commit the murder.

Ran, Sonoko, and Conan are watching "Which Sweets Show", a television program where two chefs compete to see who makes better sweets. The defending champion wins again, making him the winner for six weeks in a row. Thanks to Sonoko's father, Ran, Sonoko, and Conan can watch the preview from the show's gallery next week. Sonoko, who needs to invite five people, but she is stuck on the last person to invite.

Conan, Ran, and Kogoro come across Nana lying on the ground in the park after nearly driving into a scooter blocking the road.

Can Conan locate the Blush Mermaid and beat Kaitou Kid?

The Blush Mermaid goes on display at the Suzuki Museum, stuck on the shell of a turtle swimming inside a water tank. Kaitou Kid has announced that he will steal the jewel.