Seven years after divorcing her husband, Sakiko struggles to make ends meet while raising her only son, Ichiro. Her boss, Yoshioka, had been supporting her through financial hardship, but their relationship gradually turns twisted as he begins demanding sexual favors in return for his help. Sakiko is eventually forced into submission, her body violated against her will. A few days later, Yoshioka shows up at her home again, attempting to take her once more—until her son's friend, Akira, unexpectedly arrives and rescues her. This incident sparks an unexpected connection between Sakiko and Akira, setting them on a path toward a secret, intimate relationship.