Troubled teenager Scott aspires to be a professional drag race car driver. Scott makes several faltering attempts to break into the world of drag racing with the help of his affluent businessman father Jeff. Undaunted, Scott decides to spurn Jeff's advice by branching out on his own by going on the road as a gopher for a successful drag race car driver.

A group of people from different backgrounds have one thing in common: when they hear the world "gumball" whispered by one of the others, they know that it's time for the Gumball Rally: a no-holds barred, secret, winner-take-all rally across the USA.