Yevgeniya Lisitsyna's life is reminiscent of a fairy tale — young, beautiful, with a wonderful career and a dream man, who makes her a proposal, backed by a large diamond. Idyll is destroyed by a doorbell. A little boy is on the verge of claiming to be Eugene's son and deadly. Little Leo needs urgent surgery, which can only be done by a brilliant cardiac surgeon, Vadim Safronov. That's just survived a personal tragedy, Vadim no longer operates children.