Journalist Alena Sokolova, finding herself at the center of an investigation into the circumstances of her neighbor's death, decides to find out for herself who the killer is. One thing is obvious - Olga’s death is far from the first and not the last in a series of mysterious murders of girls who starred in advertising for the Tender company. Alena comes to the conclusion that all the threads lead to the Step studio, which shoots these commercials. Without hesitation, the brave journalist decides to star in an advertisement in order to catch the criminal red-handed at the moment when he comes to kill her...