The Okamura family's father, who is a popular designer, is very busy and has almost no days off, so he is often away from home. One day, his eldest son Koji attacks his mother Mayuko and tries to forcibly commit him. Confused, Mayuko accepted Koji, but that was a mistake. Koji's desire does not know to stay, it becomes more intense day by day and it becomes impossible to get out of the quagmire. Mayuko consults with her second son, Satoshi, that she has to do something about it...
