Aaron quits Gas Monkey just as Richard agrees to a drag strip showdown with Big Chief of Street Outlaws, leaving the Monkeys to build a race car on their own at the same time he's challenged to his own race against another set of Outlaws.
With race day against the Street Outlaws fast approaching, Aaron struggles to get his BMW ready on his own while Richard faces potential disaster when the Challenger crashes on its final test run.
The Street Outlaws agree to race the guys from Fast N Loud. Farmtruck & AZN start on a budget build to race Aaron, while Chief & Shawn set out in search of the perfect car. When Chief hears rumors from Texas, he's not sure he wants to build a car.
With only a week left, the team at Midwest Streetcars, Farmtruck & AZN are scrambling to get their cars ready to race. With little experience building cars on a schedule, both teams start to feel they might not be able to finish their cars in time.
With everyone finally in California, Chief & Richard get into it about who will drive their cars, and Farmtruck & AZN have to wait on Aaron. Then, it's time for the drivers to strap in, pull to the line, and race to see who has what it takes to win.