Dasha, a talented gynecologist at the Women's Happiness Medical Center, delivers babies to her patients, but she cannot have children herself because of an abortion performed in her youth at the insistence of her mother. After many years of impeccable work, Dasha claims to be the head of the department. But unexpectedly for Dasha, her mother Regina becomes the new head, with whom Dasha has not communicated for many years. The mother becomes not only a professional competitor, but also a personal one. It turns out that she secretly started an affair with Dasha's husband, not knowing who he really is.