Anja feels increasingly emotionally unfulfilled and isolated within her marriage to Leonhard. Following a tragic domestic accident where their young son burns himself, Anja turns to alcohol and enters a intense extramarital affair with Jan—her husband's close friend and the partner of their mutual friend Marlene. When Leonhard and Marlene uncover the betrayal, Leonhard files for divorce, triggering a devastating spiral of addiction, mental breakdown, and tragedy for Anja.