Izumi (Yu Shinoda) secretly meets Ichikawa, a tax accountant whom she met while accounting at her husband's company. Izumi, who has been thinking about quitting, has just continued the relationship. Izumi, who is guilty, offers a farewell story to Ichikawa, but Ichikawa does not accept it. Physical relations escalate further and become captivated by Ichikawa's metamorphosis play.