 On Christmas Day, Sylvester switches the gift tags of his gifts with those of his owner, Granny. Granny is puzzled when her "gift" is a rubber mouse, but then realizes what has happened when Sylvester burps up Tweety s feathers. Tweety distracts Sylvester with another "gift" a large bulldog which devours the cat. After Granny throws out the dog, Sylvester resumes chasing Tweety, using a toy steam shovel and rerouting a toy train as ploys to get at the bird. Eventually, Granny has had enough of Sylvester and the bulldog s carnivorous pursuits, and just before a closing Christmas song stamps over the puddy tat and doggys  mouths!