Fujiyama Satoru, whose father is a detective, leads an ordinary life working at a bank. He is in a romantic relationship with his colleague Kawahara Hitomi, while at the same time receiving affection from his junior, Mizushima Yuko. His life takes a tragic turn when a violent incident occurs at the bank. The perpetrator shoots Satoru's father, who happened to be at the scene, and calmly negotiates with the police while committing inhuman assaults inside the bank. Male hostages are stripped naked from the waist down, while female employees are forced to strip completely. The hostages are then subjected to a horrifying crime they will never forget. This atrocity leaves a deep psychological scar on Satoru's mind.