Marta works as a trainer at a fitness club. She met with Vitaly. They begin an affair. But Martha thinks that Vitaly is cheating on her with another woman. A jealous woman begins to follow a friend and suddenly finds out that Vitaly is not a Manager at all, but ... a killer! Martha makes a statement to the police, but they don't believe her. Now the heroine is forced to save herself from a bloodthirsty lover...