The holiday season is here, and brilliant but accident-prone super genius Steve Urkel has only one mission: to make the holidays the best they can be for everyone! However, things are off to a not so merry start after he ruins a celebration at his local shopping mall and humiliates the department store Santa. Hoping to make things right, Steve invents a device that helps people spread holiday cheer but it only manages to make things worse. Using his big brain and even bigger heart, it’s up to Steve to help the city rediscover the holiday spirit.