The shaggy poodle-bobtail mix Willy Wuff rescues two small puppies and ends up with them involuntarily in a mountain hut. Thomas also wants to spend Christmas there with his wife Hilde, his future wife Geli and his seven-year-old son Michael. The constant quarrels between the adults make things difficult for Michael until he discovers Willy and the puppies. The boy lovingly begins to look after the dogs.