Retired stock car driver Gil Jones is all set to enjoy his leisure years working in Thunder Alley, his garage for specialty cars, when his solo domestic bliss is interrupted by the arrival of his newly divorced daughter Bobbi and her three precocious kids. As if Gil didn't have enough trouble managing his garage with his dimwitted mechanic Leland, now he must make room for three rambunctious kids and a daughter almost as stubborn as he is.