In an oppressive future, where everyone's only contact is their computer, one lonely young man is forced to venture forth in search of human contact.

Lincoln and his friends officially start going to middle school, but problems arise when Lincoln learns that he's stuck in a different class from his friends. And when he tries to get transferred to his friends' classroom, he instead ends up being moved to a different school in Canada! Meanwhile, Lori has trouble fitting in at college, and Lynn Sr. and Rita try to get Lily to finish potty training.

Desperate to get off Santa's Naughty List before Christmas, Lincoln resorts to hacking into the North Pole computers and putting himself on the nice list. But when the hack gets out of control, he ends up reversing the Naughty\/Nice lists around the world and turning the North Pole itself Naughty. Lincoln enlists his family to go to the North Pole and try to fix the mess he made. Teaming up with his new frenemy, Duncan, the elf who first put him on the naughty list, Lincoln and the Louds must battle a now evil Santa and his minions to save Christmas.