Reiko, a wife, was invited by her husband Takaaki to go on a hot spring trip. When they arrived at the inn and went straight to the bath, the clerk suddenly came in and took Reiko from behind, groped her ass and devoured her anal hole. Reiko hurriedly ran back to her room, but another clerk was waiting for her there, and violated her anal hole, which had never been touched by her husband. She was unaware that her husband had made a hole in the shoji screen to spy on her and fulfill his desire, and that the real purpose of the trip was to have his anal hole cuckolded...