While walking Theresa Fowler and Debbie Kang home on Halloween night, Randy and Howard try to figure out what is turning everyone in town into zombies.

Randy travels to the forest to retrieve sap from a sacred tree in order to restock his Ninja gadgets, but McFist beats him there and snags the tree for his holiday party. Randy poses as a Ninja Santa to get in to the party and winds up defending himself against a robot snowman and his team of elves.