Shoko, who lost her husband to illness, was gazing blankly at the portrait of her husband. Her son Hajime was acting resolutely in front of the guests who had come to the house in place of his mother. That night, Hajime was suspicious of his mother being alone with his uncle in the empty living room. He listened through the sliding door and found out that his mother was being made love to by his uncle in return for financial support. Hajime felt lust for his mother as she moaned in front of his father's portrait, and possessiveness to prevent his uncle from taking his mother away from him...