Invisible blue hat, korea

When the evil wizard Gargamel chases the tiny blue Smurfs out of their village, they tumble from their magical world and into ours -- in fact, smack dab in the middle of Central Park. Just three apples high and stuck in the Big Apple, the Smurfs must find a way to get back to their village before Gargamel tracks them down.

When Grouchy Smurf behaves badly to everyone and refuses to celebrate Christmas, the Smurfs of Christmas Past, Present and Future teach him to appreciate Christmas.