A bowling ball falls on Fred's head and Barney takes him to a doctor. However, this Dr. Frankenstone has a machine that can switch personalities and he's looking for a human guinea pig.
Fred has to organize two parties and one hour apart. Pebbles' first birthday party, he already planned. Plus, he and Barney were picked by the Grand Poobah to create a Water Buffalo Stag party, because they arrived late.
Fred is stung by the slight of being the only employee not invited to Mr. Slate's party. But it seems he may get a chance to attend after all, in the guise of a mysterious, suave, exotic stranger.
Fred and Barney are caught up in a swirl of spies' intrigue, with exotic and menacing strangers and multiple threats on their lives, all while Wilma and Betty are waiting for them to return with the burgers and buns.
Fred is such a natural as a department store's Santa that news of him reaches the North Pole, where Kris Kringle has him in mind for much more important work on Christmas Eve.
The sheriff of an untamed western town offers visiting Fred his badge for a day, but doesn't tell him that three outlaws are on their way to the town to eliminate the sheriff, no matter who he is.