An innocent schoolgirl, Asada Yuri, is tricked by a man who calls out to her on her way home from school and ends up being creampied. She tries to escape many times, but the door is locked from the outside and she can't escape. She is held captive by a stranger and forced to have creampie sex every day, morning, noon and night! At first, Yuri resists, but gradually she accepts the man's love and starts begging for him to creampie her. "Please cum inside me again today."