Katya and Gleb are happy in marriage, their charming little son Yegor is growing up. Nothing threatens their love until a young woman recovers with her baby and friend at sea. Gleb, busy with urgent work, forced to stay home.

Husband of a strict self-made girl falls ill with a strange disease. Looks like coma, but he constantly and miserably cries. The doctor gives a recipe, which looks absurd first: to save her husband, she has to "become a woman". This coming back to femininity turns out to be the hardest nut to crack for the modern emancipated woman...