Midori, who has a son who is a student, has a serious problem. The cause of this problem is her son's friend, Mr. A. A young boy of marriageable age would be ashamed of Midori's beauty and large breasts. That's why Mr. A fell in love with Midori. Midori is happy that a young boy likes her. However, the man in question is her son's friend. Her body is throbbing with the feeling that she "shouldn't do it" and she's sure to make a mistake if she carries on like this. So, troubled, Midori decides to release her feelings by having sex with a young actor who resembles her son's friend...