Hibiki Mamiya (Takeuchi Ryouma) is a car mechanic who has been dating his lover since high school. One day, Hibiki Mamiya got into an accident and was trapped in a tunnel for four days. When he escaped from the tunnel, the world became like the end of the world: the streets were empty, the traffic system was paralyzed, the signal was interrupted, and the streets were covered with blood, so Hibiki Mamiya decided to find his lover.