The story of a complicated love triangle. Three school friends—Lyusya, Marina, and Igor—had been friends and spent time together since childhood. As they grew older, they began to develop deeper feelings for one another. Igor started courting the modest Lyusya, but despite Marina’s secret love for him, this did not destroy their friendship. After graduating from school, the friends remained as close as ever. The couple’s life begins to fall into place. Once Igor gets on his feet, he proposes to Lyusya, and she accepts. After getting married, they become the young parents of two wonderful children, while their friend Marina always helps them with the household. But then tragedy strikes the family: Lyusya develops amnesia. The doctors are at a loss, unable to understand the cause of such a serious illness. Marina helps place her in a medical institution, but her friend’s condition becomes much worse there... Watch the first season of the Series «Someone Else’s Happiness» online in our online cinema.