The MSO steps up to the challenge after larger-than-life Chris Block challenges them to switch to small tires and compete against South Carolina. Then, Block comes back with some grudge racers to get another shot at Memphis' money.
The MSO switches to small tires hoping to attract new challengers and must work together to outrun Tim White and his small-tire killers from Illinois. Then a list of tough small-tire racers are ready to line up and give Memphis a run for their money.
First, Tim White from Illinois revisits Memphis with a big surprise. Afterwards catch the underground scene as racers hit the local streets during Race Night In America.
The MSO takes on a group of Kentucky racers along with Quinn's hired guns. Then rebel racers take to the streets in Texas, Michigan and Missouri.
The battle between MSO and Quinn continues in Kentucky, then summer street racing heats up in Tennessee, Oklahoma and the Northeast.
Tony Yeager and Whitfield roll into town with a group of local Donk-driving racers ready to call JJ out. Then, outlaw racers square up in California, Ohio, and Oklahoma.
Now that his team is on small tires, JJ puts them to the test by inviting the country's best small-tire racers to Memphis for a winner-take-all race with a $16,000 pot. Then tempers flare when Oklahoma, Texas and New York face off.
Round two of JJ's $16,000 small-tire race kicks off and only half of the MSO is still in the competition. Then the burning rubber continues on the streets of Pennsylvania, Oklahoma, and Arizona.
The MSO is surprised when a group of racers claiming to be from Delaware turns out to be a team of racers from all over America. When Grudge Night begins, the 405 and Texas keep their data to themselves, leaving racers without teams struggling to keep up.
The MSO continues their battle against an all-star group of racers out to avenge past losses on the streets of Memphis. Then NOLA makes moves on the 405 and Lizzy Musi joins Grudge Night for the first time.
The MSO family loads up the hot rods and heads to Vegas to meet up with King Donnie and a group of West Coast racers. Then during Grudge Night, NOLA is looking stronger than ever and Texas brings out a big-tire car in an attempt to stay in the fight.
JJ calls up a group of racers who have all beaten the MSO before and challenges them all to a rematch. Then high altitudes wreak havoc on tunes and motors in Idaho as NOLA surges ahead in the NPK standings.
The second night of racing against teams that have beaten the MSO continues with some more heavy hitters. Then, a team of outcasts joins forces to compete and team Texas sees their chances of pulling out a win slipping out of reach.
JJ has the MSO face off against the best small-tire racers he's ever seen -- themselves! Then Team NOLA preps for another night of success as the racers take on the tricky Rocky Mountain altitude at Bandimere Speedway in Colorado.