The protagonist of the Russian series "The Second Wife" is Marina, a happy housewife. She is married to a wealthy entrepreneur named Egor, and the only thing they lack is children. However, Marina's peaceful life comes to an end when her husband suddenly dies tragically. She discovers that in addition to numerous debts, she has also inherited Egor's secret second "wife" - a young beauty named Lika, who managed to give him the long-awaited son. But Marina decides to investigate her husband's strange death.