Five years after marrying his childhood friend Kanon, a man loses his father-in-law and begins living with his mother-in-law Toko, who was also his first love. He tries to bury his old feelings, but sharing a home brings them rushing back. When Toko receives an offer to model lingerie, his wife strongly objects. Still unwilling to give up, Toko waits until her daughter is away and asks him to photograph her in lingerie, awakening the desire that consumes them for the next week.