Katya - a young, beautiful girl - has found her happiness. Her lover Andrew, though not a prince, but a kind and decent guy. The lovers are preparing for the wedding, and it seems that nothing can darken their joy. But the heroine’s love is also claimed by another: the spoiled and capricious Marat - the son of the factory manager. Marat is not at all embarrassed that Katya is not free - he is firmly determined to get her by any means ...