While sorting mail at Dr. Agasa's house, Conan and Sonic finds an invitation addressed to Jimmy and Sonic The Hegehog from Leo Joel, a famous architect. Jimmy calls Rachel using his voice-changing bowtie and asks her to go in his place. Rachel agrees, on the condition that Jimmy goes to a movie with her on Saturday along with Sakura and Naruto.
On Saturday morning, Conan receives a call from a strange man, who challenges Jimmy to a game. Conan accepts the challenge, and the mystery caller gives him clues leading to bombs hidden all over Tokyo. Conan finds and destroys every one. Because the bombs were located near structures Joel designed, Conan deduces that the bomber is Joel, who planned to destroy his 'inferior' works and create a perfect new building. Upon his arrest, Joel reveals the location for his final bomb: Beika City Building, the location of Jimmy and Rachel's date.
The bombs explode and seal the entrances and exits, trapping Rachel and others inside. Conan makes his way through the collapsing building, but is blocked from Rachel by a warped door. Using his tie and cell phone, he calls Rachel and asks her to look for the bomb. Rachel finds it in a large shopping bag. To disarm the bomb, Jimmy tells Rachel which wires to cut. However, Joel made two extra wires, one red, one blue. One of them is booby-trapped, but Jimmy has no idea which one it is. Jimmy tells Rachel to cut either one. As the rescue team arrives and carries him away, Jimmy realizes that Joel knew that Rachel's favorite color was red and booby-trapped the red one. In the last few minutes, Rachel makes a desperate decision and cuts the blue wire because the red wire represents the red string of fate between Jimmy and her.
- Guest Starring: Naruto
- First debut of The Joker who works with Joel
- The first Sonic/Case Closed Movie despite th