Marina's libido is so intense that she can't help but masturbate anywhere, anytime. At the public pool, at the gym where men are working out, in the hallway next to a classroom during class, even during her female friend's sex session, or in the gym. She knows she shouldn't be doing this here... but knowing that makes it even more pleasurable and she can't stop. On top of that, masturbation alone isn't enough, so she ends up having sex with the men who caught her in the act...