Shinya, a father who is having a hard time dealing with his son Akira who is not good at studying, finds out that Yui, the wife of his subordinate Hatano, is a private tutor and decides to ask Yui to help him. When Yui comes to his house, Shinya has a polite and serious impression, and places his full trust in Yui. However, Yui's true face is that of a dirty woman who is hungry for young men!