Kogoro, Ran, and Conan are invited by Kogoro's friend, Raita Banba, to attend his pre-wedding party. Banba's bride, Hatsune Kamon, leaves to have her nails done. Shortly on her return, she receives a phone call at the parking lot that shocks her. She calls Banba, bidding him farewell, and her car is engulfed by fire. The police arrive and their DNA test reveals a rough match of Banba's DNA was found on Kamon's nails insinuates him as the murderer. Banba proclaims innocence and reveals the culprit is most likely Tooru Amuro, their waiter who has secretly met with Kamon. Tooru explains he was hired by Kamon to investigate Banba and see if he was having an affair; To attest to his alibi, Amuro reveals Banba also hired a detective to follow Kamon for the same reasons. The detective confirms Amuro's identity and leaves Banba as the main suspect.