 Slime are keeping Grandma out of sight.They rescue Grandma and find Santa's letter explaining what happened, that Cousin Mel had found at the site of Grandma's accident, and also the vial of the ingredient Cousin Mel added to Grandma's fruit cake that Christmas Eve night, which had the effect of "reindeer-nip" irresistible to reindeer.They manage to restore Grandma's memory by feeding her some of her own fruit cake, and rush to the courthouse to prove Santa's innocence.