The three parents and children of the Iori family enjoyed a happy trip in a natural hot spring. However, his mother Ryoko's charming body makes her son Masahiko feel evil. Even though she loved her husband, Ryoko was able to meet her son's desire. The mother and child gradually speak deep and interact with each other as if they were jealous of each other's bodies. And finally, he stood in front of his father to take away his mother.
