S1, E1: Evgenia's and Viktor's marriage is going through a rough patch, but the couple stays together for the sake of their son Kostya. One day, Yevgenia finds in their home an amethyst earring that doesn't belong to her, and their relationship goes downhill. But Zhenya cannot even imagine that Anna, her husband's ex-lover, hasn't forgotten or forgiven. He will get his revenge.