On the night Seth and Harrison finally come home for the summer, Tyler and Jake decide to throw a party to officially welcome them back. But when Jake invited a few too many people, the address gets leaked and a flood of THN characters comes through. With The Thirteenth Doctor, Larry the Elf, St. Patrick, and many, many more running around the house, Tyler and Jake have to try to keep the party under control before the cops show up to shut it down.