A researcher at Chicago’s Natural History Museum returns from South America with some crates containing his findings. When the crates arrive at the museum without the owner there appears to be very little inside. However, police discover gruesome murders on the cargo ship that brought the crates to the US and then another murder in the museum itself.

When Santa Claus decides to retire and pass on his magic bag of Christmas surprises to a new Saint Nick, he enlists the aid of a hilarious assortment of characters. A perky teen runaway and hapless taxi driver Ernest P. Worrell must convince a skeptical kiddie-show host to take over the post of Father Christmas.

Jay Austin is now a civilian police detective. Colonel Caldwell was his commanding officer years before when he left the military police over a disagreement over the handling of a drunk driver. Now a series of murders that cross jurisdictions force them to work together again. That Austin is now dating Caldwell’s daughter is not helping the relationship at all.