Kibosh, supreme ruler of all ghosts, decrees that casper must scare at least one person before Christmas Day so Casper visits Kriss, Massachusetts where he meets the Jollimore family and sets out to complete his mission. As usual, kindhearted Casper has a ghastky time trying to scare anyone; so The Ghostly Trio, fed up with his goody-boo-shoes behavior, secretly hires Casper's look-alike cousin Spooky to do the job-with hilarious results.

Linda and Michael, married for ten years, desperately want a baby and turn to an adoption agency which introduces them to Lucy, a teenage girl expecting her first baby. The three agree that Linda and Michael will adopt Lucy's baby and that Lucy will sign away custody. Things don't go quite to plan however..

Estranged from his father, college student Jake is lured home to New York for Christmas with the promise of receiving a classic Porsche as a gift. When the bullying football team dumps him in the desert in a Santa suit, Jake is left without identification or money to help him make the journey. Meanwhile, his girlfriend, Allie, does not know where he is, and accepts a cross-country ride from Jake's rival, Eddie.