Rosy is a karate black belt and selfdefense teacher and she is also the secretary of the gym where she works. She receive a phone call to book a private class by a guy that ask for a really qaulified teacher for him. The lesson is fixed but when the guy arrives, thinking to find a strong master, and find out that Rosy is the teacher is a bit disappointed and start doing mess, untill Rosy decides to show him that women can defend themselves as well than man..and he will learn this hard, painfull lesson on himself.