Willy Wuff receives the news that his brother Rocco, star of a dog show on the vacation island of Fuerteventura, has disappeared without a trace. The brave four-legged friend immediately rushes to the airport and travels to the Canary Islands as a stowaway. There he meets little Andi, who is terrified that his parents are separating. Willy Wuff not only manages to track down his brother, but also to save Andi's parents' marriage.