Returning from a foreign business trip, Vera Berezhnaya met her acquaintance, former ministerial official Boris Sofin, on the street of Stockholm. After leaving his position, he decided to start organizing cruises and invited Vera to return to St. Petersburg on his fashionable yacht. Boris promised an unforgettable trip, because a theater troupe is currently touring on the yacht. And indeed, Vera is unlikely to forget this trip! On the very first day of the trip, the official who oversaw the theater and accompanied the actors was killed. And each of Melpomene’s servants found reasons to wish her death...