Grey's Anatomy

Competitors strap in for the fall mud circuit in the intense, gritty underground world of mud racing. The racing is wild, the rivalries are fierce, and the party turns up when the sun goes down. At the wildest party in the USA, self-proclaimed "Mud King" Josh Carmon goes head-to-head against fan favorite Bryce Sparks, but their grudge spirals out of control when one of them takes it too far. Randi Alicia looks for a comeback after being crushed by her own vehicle -- after a two-year hiatus and a broken back, she's ready to race again. Big money is on the line, and no one is holding back.

Racers gear up for the circuit's second and possibly wildest event, the Rednecks with Paychecks Fall Mud Crawl. Beyond hosting an infamous "Adults Only" party scene, the 4-day affair features 1,200 acres of mud, carnage and almost $100,000 in cash prizes. Bryce Sparks looks to put on a show and win his daughter a new UTV; Randi Alicia works to overcome her traumatic accident by earning a victory in the bounty hole. Meanwhile, two new drivers, AJ Robertson and Megan Rion, join the fray and ignite a rivalry.

The Mudders descend on Carter Off-Road Park for three days of dirt, gas and speed. Bryce is excited to reclaim his title for the bounty course, but Josh arrives with $10,000 in his sights. However, he can't keep his eyes off his old nemesis, Bryce. Things quickly get out of hand -- ending with a broken rig and a bruised ego. Meanwhile, Larry is desperate for a podium and takes a big risk searching for his first big payday of the season. Hungry for a sponsor, AJ pushes his ATV to speeds of nearly 100mph.

At Arkansas's world-famous Greasy Bend Off-Road Park, rivals Bryce and Josh wager big money on the small tire bounty course. Larry Oakes calls up his old friend and fellow mudder, Bobby Cobb, to help him complete a bounty hole for the first time. After a dismal run in the bounty hole race, AJ Robertson seeks to gain a competitive edge on rival and friend Megan Rion.

Larry and Bobby enter a wild trail race that has them using questionable tactics while chasing their first win of the season. Bryce dresses to impress and risks it all on the ATV short course. Randi competes in the Bounty Hole call-out races, taking on friend and fellow female driver Megan Rion and legendary skimming veteran AJ Robertson.

In the final race of the season, the competition between friends and foes comes to a head on the mud racing circuit. The Josh Carmon vs. Bryce Sparks rivalry is on a collision course as the two line up for their final race. AJ unveils the biggest ATV in the world, Eleanor, threatening to bump both Megan and Larry off the podium in the Mega Bounty Hole race.