The Sogabes that father of the university professor has run away from home suddenly. The family is merely dumbfounded. Every day when older brother, Cage has sex with Mayuko of the student of father, and Younger Sister, Shizu counts the number of times of the Sex with Kazuo of the classmate. As for wife, Miyuki, Ai with Shinsuke who was the rival in love of the husband begins to arise in the classmate of college student days. Meanwhile, news of the death of father reached the family. When a wake is over, Miyuki is made to hear an unexpected fact from Mayuko….
