Two happy couples enjoying a home party. Suddenly a fugitive rushed in and the situation changed completely! Confinement strength ● Turns into a swapping shrine! A chaste wife who is violated in front of her husband, a young wife who culminates in confusion. Victims who lose their words when they see each other's hidden side. Jealousy, doubt, and pleasure. In a closed room that has fallen into fear and confusion, the instincts and madness of the four people begin to awaken. Confinement strength presented under the supervision of Kenzo Nagira ● Swapping drama.