Van’ka, the son of tycoon Semen Andreev—an idle charmer and womanizer—fell in love. He decided to straighten up: he passed both sessions, abandoned partying, and didn’t set foot in a strip bar. He follows his beloved like a shadow. The beauty, Sandra, earns extra money in a hospital as a janitor/assistant. And so he goes there with her—carrying buckets of water, helping wash the floors! And everything would be fine… if only Sandra kept Ivan at a distance. Even with Andreev’s money! She doesn’t accept gifts and refuses his proposal to marry her, even though it’s obvious she loves the reckless Van’ka. And at the same time, attempts have been made on Sandra twice. Clearly, some secret hangs over the young woman’s life. And Semen Andreev decides to hire a private detective, Tatyana Ivanova—who immediately begins the investigation…