Schlunz is a boy who lost his memory. The day when the family Schmidtsteiner finds the neglected, completely intimidated guy in the wood, that's the beginning of a new turbulent time for Dad, Mom, the nine-year-old Nele and especially for Lukas, who becomes Schlunz' best friend. The only thing, on what the boy with the tousled hair remembers, is, that he was called "der Schlunz".