CHIN's

Takagi and Miyamoto poses as a bride and groom in order to catch a serial killer/burglar who had threatened to kill the real bride and groom. When Chiba reports that the burned corpse of one of the wedding guests is found near the river, Megure deduces that the victim was killed by the serial killer in order to obtain the wedding invitation. A mysterious video arrives at the wedding party from a friend of the groom. After watching the video, Megure suspects that the killer is already in the chapel and Conan suggests that the bride meet with the guests in order to find the burglar who broke into her house. The bride reports that there are three suspicious guests: a photographer, a snowboarding instructor, and an internet administrator. The groom insists that the wedding to proceed, despites Megure's protests. As the bride walks down the aisle, the burglar suddenly appears. However, the groom announces that the burglar was actually a police officer, Chiba, posing as the burglar.

After solving clues Takagi leaves suddenly and Conan reveals who the kidnapper is. Just then, the boy returns home unharmed, making them believe the culprit will try to make a run for it. After arriving to his house it is revealed that a winning lottery ticket was returned to the culprit in his mailbox, making him release his friends had no intention of stealing from him and the guilt of his crime caused him to suicide. Takagi manages to save his life while Sato yells at him for the danger he could have been in.

Mori, Ran, and Conan are at a cafe when they run into Takagi who is aiming to pick up girls. Meanwhile, he finds Sato there doing the same. After a tense date with two strangers, Conan realizes from the conversation that a boy home alone is in danger. When they arrive at their house, the boy has been kidnapped. The kidnapper leaves an email demanding money.