Katy and her brother build a magical snowman. When it gets too cold to play outside, they go into the house - but Mr. Snowman wants to come in, too!What follows is a humorous tale as Mr. Snowman tries to sneak in without anyone noticing. Everywhere he goes, things freeze! From crystals on the dinner plates, to icebergs in the bath, Mr. Snowman is found and asked to leave every time.But on the day of the Christmas party, something goes wrong. The desserts won't set and the ice cream melts...!Could Mr. Snowman save the day?