Olga and Vera are twin sisters. 12 years ago, the luckier Olga stole Vera’s fiancé Igor, married him, arranged her own business and got rich. Meanwhile, Vera has not married, she is a waiter in a provincial restaurant. 12 years later Igor found Vera and told her that Olga’s life had been attempted, and she was lying in the clinic unconscious and, for safety, incognito. Igor begs Vera to “temporarily substitute” Olga to sign an important contract on Olga’s behalf. Vera, who succumbed to Igor’s urgings, agreed to “turn into” her sister Olga for some days; however, she did not even suspect that since then, she was getting a pawn in other people’s game, and it is the two sisters’ lives that are at stake…