Sonoko's uncle wants to capture Kaito Kid to improve his fame. Kaito Kid arrives on the scene and seemingly walks on air to investigate the treasure he will steal. Conan investigates and finds out the trick Kaito Kid used. The second time Kaito Kid tries to steal the jewel but it was revealed to be a distraction. Kaito Kid steals the jewel from indoors and is making his escape on a motorcycle when Conan is found to be on the passenger seat. Kaito Kid manages to lose Conan and escape once again.

Takagi and Sato are on a date at Tropical Island while the Tokyo police force try and prevent Takagi from making a move with Sato. Later, the Detective Boys are bought up and Takagi and Sato are forced to watch over them. Later Takagi's bag with a wedding ring in it is switched, and Takagi finds out he has a bag of cocaine.