Lili Pleskova has been blind since childhood. She and Vadim love each other and Vadim hopes to make her see again. And it will indeed be the result of a long-prepared operation. However, when she regains her sight, she confuses Vadim with his brother Georgy. For fear of disturbing her, she is not disabused and the marriage with Georgy is announced. But Lili learns that Georgy is cheating on her, she is shocked and loses her sight again. Warned, Vadim returns to her to help her. She finds true happiness without knowing the confusion she had made.