The movie brings the town of Royal Woods to life for the holidays and follows Lincoln Loud as he gears up for the ultimate Christmas, until he finds out that most of his sisters have plans to be elsewhere for the big day. Determined to remind his family that they all need to be together, Lincoln and his best friend Clyde McBride embark on a mission to preserve the family’s holiday traditions.
Lincoln is excited to stay up late with his best friend Clyde to watch the RIP Hardcore Midnight Marathon, but his plans are ruined when his dad institutes an early curfew. They come up with the idea to use the Loud sisters to get Dad out of the house to celebrate his half-birthday, but just as they think their plan worked, Lisa’s robot Todd malfunctions and Lincoln must decide what being a good man is really about.
Lincoln and his best friend, Clyde, struggle to decide whether to participate in the Loud family Spooktacular, attend their friend, Xander's, party, or go trick-or-treating on Halloween.
Lincoln has a crush on Lynn’s new best friend, Zia, and the only thing stopping him from asking her out is… Lynn. In a series of trials and tribulations, Lincoln tries to prove to Lynn that he’s worthy of dating Zia.
After Lincoln manages to quickly put out a fire in the kitchen, the family all assembles to get to the bottom of who set the fire in the first place!
Lincoln and Clyde have successfully pulled off getting out of gym class. With their new found freedom, they decide to go see a Rip Hardcore taping but cause Rip to lose his job. Guilt-ridden, Lincoln invites Rip to live at the Loud House until he can get back on his feet.