Elizaveta Sukhomlinova was eager to help her daughter: after the divorce, her husband took their son for himself and did not allow Anya to see him. But where can you find money for a lawyer? Elizaveta managed to get a job as a concierge in an elite house, she even developed friendly relations with her boss, Alexander Tarasevich. He developed more tender feelings for the new employee and one evening invited her to visit. Having barely touched the treat, Elizabeth ran away from her admirer, and the next day after her visit a murder occurred! Not knowing what to do, Sukhomlinova turned to her old friend, the owner of the detective agency Vera Berezhnaya...