Businessman Ilya Baryshnikov has his own views on how a corporate party should be held - always in costumes of some era. So this time, his guests were obliged to come to the ball in wigs and crinolines, as if at the invitation of Catherine the Great herself. But the holiday is ruined: in the midst of the fun, a promising young top manager dies. Accident? A fatal coincidence? Or maybe one of the guests got too carried away by wearing a masquerade villain costume? Private detective Tatyana Ivanova has to take up the case again - after all, she arrived at the ball in this ridiculous fluffy dress along with the deceased...