The Detective Boys run into a strange man named Kyouzou Daita who invites them to a cake shop after they apprehended a thief who robbed him. While talking with him, Conan notices the man is acting strangely. That night, the Detective Boys confront him and reveal he plans to kill himself and make it look like an accident in order to use the insurance money to pay for his grand daughter's surgery. Daita confesses and reveals that after losing a winning lottery ticket, he contemplated suicide was h