A Loud House Christmas follows the Loud family as they plan for their holiday celebrations. But when things go awry, they end up in different places across Miami. With time running out, the Loud siblings must come together to save Christmas and reunite their family.

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.