Orange County Choppers begins a new chapter as they break ground on a massive, new world headquarters. With the family business expanding, Paul Sr. throws down the gauntlet, challenging Paul Jr. to a build-off that will determine the future of OCC's next dealership bike. After sides are drawn, the competition heats up and shop antics are raised to new heights. But despite a heated rivalry and mounting stress, the Teutuls still manage to find time for some family bonding.