Linus, a convinced monogamist, and Christa, an equally convinced polygamist, are a couple with a passionate, conflict-ridden relationship. They are torn by big feelings that are often provoked by themselves and keep their lives on the go in ever surprising ways. Their most important caregivers are: Sybil and Franz, who have always believed in the romantic ideal of love, André, the tolerant old 68-year-old from the Jura, Ka, who loves to play with fire, and Ewa, Linus' (ex-)wife from Vienna, as well as their son Sebastian.