The Sencil family transforms their home into a gingerbread house fresh out of the oven, delicious smells and all, using repurposed DIY products in Suisun City, California. The Castle family puts on a synchronized light show with techie up front and tacky out back in Palm City, Florida. The Notchick family creates a southern Christmas display in Jacksonville, Florida, with the two retired Navy Veterans dedicating part of the display to all who have served. The Nahas family's display ranges from a talking reindeer to outer space Christmas aliens, complete with a "Tunnel of Christmas" where all the themes collide in Staten Island, New York. Taniya Nayak chooses the winner.