A live-action adaptation of the hugely popular doujin comic by Chinjao Musume! Innocent female college student Takamine Miharu is invited by a friend to join a tennis club. At the welcome party, she is forced to drink alcohol that she is not used to, and when she comes to her senses, a man who calls himself the club's secretary-general whispers to her, "Sorry, but this is our tradition lol," and plays with her... And so, having been completely defiled by the men, Miharu falls into the role of a member of the sex club...!