The Russian melodramatic series "When the Sun Rises" tells the story of a girl named Rita Kozyreva. She harbors tender feelings for her professor at medical school, the brilliant surgeon Igor Osintsev. Rita has lived with him for 5 years, but the couple never went to the registry office. The problem lies in the fact that Osintsev is legally married. His lawful wife, Lyubov, adamantly refuses to agree to a divorce. In the parents' conflict, Andrey, Igor's son, takes his mother's side.