Sugimuro Saburo and some of his staff get caught in a bus hijack. The hijacker tells the hostages that he will pay compensation money to them when the hijack has ended. However, the hijack takes an unexpected turn and the mystery begins.

Saburo Sugimura works for the PR department of a company which his father-in-law runs. his job is to edit the company newspaper. One day, on the bus, Saburo Sugimura faces a hijacking attempt by an older person with a handgun. The police enter the bus, but the handgun goes off by accident and the hijacker dies. All the hostages are safe. The case seems solved, but the real mystery begins. The passengers and bus driver are due to receive compensation from the deceased hijacker.