After giving birth, mother Chihiro finds her days with her husband dull and uneventful. In the midst of her monotonous, colorless routine, she becomes addicted to masturbation as her only source of pleasure. One day, while preparing dinner, she fantasizes a carrot as a penis, indulging herself in the kitchen. Unnoticed by her, her beloved son witnesses the scene. Seeing his mother masturbating ignites his desire, and unable to control himself, he approaches her. Initially hesitant, Chihiro gradually awakens to her primal instincts, pins her son down, and passionately entangles with him on the bed. This fleeting impulse creates a new ripple in their relationship.