Lovers Nina Afanasyeva (Anna Mikhailovskaya) and Grisha Andreev (Anatoly Rudenko) are preparing for the wedding. Nina presents her wedding as perfect, follows the traditions, one of which is that the bride and groom must live separately before the wedding. Grisha accepts this not very pleasant news for himself, but is ready to prove his loyalty to the bride by passing even such a test. However, a chance meeting of the heroes with Nina's former classmate-Katya (Inna Yarmoshuk) it changes everything. Lovers will have to go through a real test of loyalty through infidelity, separation and despair.