In the RV, the Tennysons drive in the streets of Death Valley, California, where they suffer from the desert's deadly heat wave. The kids tell Grandpa Max to turn the air conditioner up, hopefully to get some relief from the weather. Little did they know that the thermostat is already set to its maximum setting. Instead, Ben turns to Grey Matter, checking out the system if there are any nuts and bolts to adjust in the RV's cooling system. Unfortunately, it backfires, causing them to stop in the middle of nowhere to get away from the dangerous fumes. They look around, noticing a mysterious gate in the middle of nowhere. They head closer to the gate anyway, hoping to find help with their broken A/C.
They head inside to find a town that was covered with snow, and it was comfortable for them to stay awhile. As they head down, a man mysteriously watches them from a range. Inside the town contained many Christmas novelties and decorations. It made them realize that they have never spent Christmas as a family for quite a time, though the kids were such in a rush to head out to enjoy themselves in the fun-themed village.
Grandpa Max grabs some cocoa, and outside, a group of elves tell him to follow them. He is directed to a giant mansion, where he is warmly greeted by a small man going by the name of Mr. Jingles. Mr. Jingles is delighted to have Max over, calling him Santa Claus. Max tells him that he must be mistaking him for another person. Instead of letting him head back out, he is dressed by the elves to become Santa Claus, and he is forced to sit in a chair, while he struggles to brake free from Mr. Jingles' remote control.
Now Ben and Gwen must go help their grandfather, with the guidance of an elf who goes by Elsgood.