A mother must protect her family on Christmas Day from a demented stranger who is hell bent on tearing them apart.

When the Mystery Inc. gang is invited to Spooky Island, a popular amusement park, they soon discover that the attractions aren't the only things that are spooky. Strange things are happening, and it's up to Scooby, Shaggy, Fred, Daphne, and Velma to uncover the truth behind the mysterious happenings.

A filmmaker's lifelong dream quickly becomes his worst nightmare when he attempts to make a low budget horror film about an aborted fetus that seeks revenge on its family.