Since his girlfriend Marianne began attending a dance school, Benoit began to notice changes in her behavior. This alarmed him, especially since Gloria, the owner of the school was involved in the case of the mysterious death of one of the students who had fallen from the balcony. Soon, he noticed that Marianne began to avoid him, and after a while he learned that there was a sexual relationship between his girlfriend and Gloria. And this connection causes burning jealousy from the other student...