Rita Chastina is happy in marriage. But the cloudless family life is suddenly destroyed: after the celebration of the 20th wedding anniversary, the woman learns about the betrayal of her husband.
The trouble does not come alone: Rita's son is in an accident. Instead of rallying in a difficult time for the family, the man further aggravates the situation and shows up at the hospital with his mistress. Rita cannot stand this blow - she decides to leave home.