Bubble and his little brother, Squeak, are excited to go to Grandma's for Christmas, but Squeak is worried that Santa won't be able to find them. "How will Santa know we're at Grandma's?" Squeak cries. "That's easy!" says Bubble. "We'll tell him!" With Mommy and Daddy's help, they come up with clever ways to let Santa know where they are. But when they finally get to Grandma's house, Bubble sees that there's no chimney. "How will Santa get in?" the brothers wail. It's up to Grandma to save the day-and Christmas!