In northern Sweden, on a sun-dipped evening, Dunderklumpen emerges from the woods seeking companionship. He discovers toys belonging to Camilla and Jens and brings them to life, whisking them away to his woodland home. The toys, including Lionel the lion, Doll, Pellegnillot the bear, and Dummy the bunny, form an endearing and amusing crew. However, Jens, Camilla's brother, soon discovers the kidnapping and follows Dunderklumpen, who refuses to surrender his new friends. Beppe, Jens' father, also pursues them, unaware of the reason for Jens' disappearance, accompanied by a diligent bumblebee. Meanwhile, Dunderklumpen is pursued by his old nemesis, One-Eye, who seeks a valuable treasure locked in a chest, but the contents remain unknown.
Dunderklumpen!
Dunderklumpen, an animated character, emerges from the Swedish woods one evening, when the sun sets only partially, in search of companionship. He stumbles upon a house, where he discovers a collection of toys belonging to a young girl.