Not all relationships between a man and a woman are full of love, understanding and fidelity. Periodically, it happens that a third party breaks into the life of a couple. Having learned about this, deceived partners often cannot forgive traitors: their dreams of a happy life together are crumbling, faith in the possibility of finding a decent person is lost, and self-esteem suffers. Each series of this project is dedicated to a separate case, which, for greater clarity, is played by actors. A professional psychologist studies these stories, evaluates and, together with the audience, tries to understand the true essence of this or that case of infidelity.