Kanna marries a man with an adult son, Kota, and enjoys a happy relationship with both of them. She desperately wants a child but her attempts to conceive with her sexually indifferent husband keep failing. When he leaves on a long business trip, Kanna and Kota begin living alone together. His increasingly intimate touching unsettles her, yet the frustration her husband never satisfies gradually weakens her resistance. Before long, she submits as Kota repeatedly fucks and creampies her in an attempt to impregnate her...