One summer day, Tokiko, whose life in Tokyo is going nowhere fast, gets on an overnight bus to the countryside. When she arrives, she meets Yohei, a high school student struggling to deal with the sudden death of a young man who was like a big brother to him.

Hikari Takabayashi is a hardworking call center agent for a home appliance company who apologizes continuously to customers, even to rude callers who call just to verbally insult her. She does, however, hide a secret. A love affair with her married boss. One day she was asked by one of her junior colleagues Mika, to take a call from a middle-aged woman named Kazuyo Miyawaki who calls frequently. Upon returning home exhausted after dealing with the caller, she noticed the nameplate on her neighbor's door, "Kazuyo Miyawaki"...

A fierce battle unfolds between a vigilante who exacts justice on unjust criminals and the police who pursue him. The story then leads to a shocking conclusion... This story will make you ask yourself, "What is justice?"