One Christmas eve Milo's owner, Katie, goes to visit relatives nearby—but when the snow comes down she is trapped overnight, and Milo is left all alone in a cold, dark house. So when Suki, the sophisticated Siamese cat who lives next door, invites him out for a stroll in the moonlight, he is pleased to accept. But when he peers through the windows and sees all the other families together in their cozy homes waiting for Father Christmas, he soon starts to feel homesick and dashes back through the snow to his house. Will Katie be there waiting for him, or will he really be left all alone at Christmas?