T.J. is a boy genius who gets bumped up from the fourth grade to high school. T.J. tries to adjust to his new life, but he shares some classes with his 14 year-old brother Marcus, the school jock, and his clueless and self-absorbed 16 year-old sister Yvette.

Smart Guy тривав 3 сезони. Нових епізодів не заплановано.