At Christmas, the Smurfs and Gargamel cross paths with two children and a stranger out to kidnap them. Can the magic of Christmas prevail?

While the Chipmunks are working at the amusement park, Majestic Movie Studios, in a singing attraction. Little do they know that the real Dr. Frankenstein are in a new attraction called, "Frankenstein's Castle". After Alvin drives a crazy bus ride, they miss their next performance and get locked in the park after closing time. Dr. Frankenstein figures that the castle isn't scary enough and re-creates the real Frankenstein and after the monster finds the boys, it starts a wild and wacky...

The small prince Bu is a constant cause of worry to Queen Sirena and King Ulvik of the Troll Kingdom (a kingdom perched atop a tall Norwegian mountain). Bu uses nasty words like "please" and "thank you", is quiet, and altogether too, well...good. The king decides that it must be what children are learning in school, so he goes to Sinister School. There, he interrogates Bu on the moral system of the trolls, on how their hearts are frozen, and on the inofficious Troll Bible. Bu gets everything...

After receiving the healing powers from a magical flower, the baby Princess Rapunzel is kidnapped from the palace in the middle of the night by Mother Gothel. Mother Gothel knows that the flower's magical powers are now growing within the golden hair of Rapunzel, and to stay young, she must lock Rapunzel in her hidden tower. Rapunzel is now a teenager and her hair has grown to a length of 70-feet. The beautiful Rapunzel has been in the tower her entire life, and she is curious of the outside...