The three thieves Kasper, Jesper and Jonathan lives together with their always hungry lion in the little town of Kardemomme town, the home to a fair but kind police officer, and the strict Aunt Sofie.

When Johannes does not find any traces of Santa in the Santa workshop, he becomes worried that it may not be a proper Christmas this year. Johannes can not risk it, so he and Brillebjørn do everything they can for Santa to visit them on Christmas Eve.