It's make it or break it time for each of the Teutul men as they head off in separate directions after a bruising family breakup. Who will come out on top as Orange County Choppers (OCC) and Paul JR Designs start cranking out competing bikes?
The cold war between Senior and Junior continues and heats up with a new lawsuit filing. Mikey's art career takes off while he desperately tries to pull the family back together. The season also brings new customers and some familiar faces including Red Jacket Firearms and the captains of Deadliest Catch.
PJD starts a build for Jared Allen's charity while OCC works on a custom build for Supernatural Cymbals. Junior meets with lawyers to stay on top of a new lawsuit from his Dad. Mikey gets a taste of the limelight at his successful art gallery opening.
OCC builds a money-themed bike for longtime client Alan Brownfeld, while Junior and Mikey head to Louisiana to consult on a custom gun design with Will Hayden of Red Jacket Firearms and Sons of Guns. Then Senior announces his reconciliation with estranged son Dan, and Junior and PJD unveil their Jared Allen charity bike to a roaring crowd.
Senior visits Mikey's gallery and is affected by paintings depicting their strained relationship. While both shops work on respective builds, Junior learns he has won his appeal of Senior's lawsuit, and Senior decides to make Junior a settlement offer.
As Senior makes an offer that he claims Junior rejected — and Junior claims Senior took off the table — both parties wonder whether the other really wants to move forward. PJD starts their charity-bike build for CrankyApe, one of two they are building for the company, while at OCC, the crew is underway with a triple bike build for Trans Am Depot. Then, Senior's dog dies and Junior reaches out to his father.
The OCC crew heads up to Alaska to meet up with the Hillstrand brothers from Deadliest Catch. Then the Deadliest Catch Bike is built and unveiled at the CatchCon fan convention in Seattle.
Cadillac enlists both OCC and PJD to build a bike in a father-son build-off. But even as the competition heats up, Senior reaches out to Junior with a second settlement offer ... and this time, without lawyers.
OCC and PJD rush to finish their Cadillac bikes for the build-off, then race CTS-Vs at the Monticello Raceway. And at long last, Junior and Senior face each other when they unveil their bikes at General Motors.
Senior and Junior finally sit down to settle the two-year lawsuit that has torn their family apart. Amidst the drama, PJD starts a new bike for FIST Enterprises while OCC builds a rock-and-roll-inspired bike for Hard Rock.
Junior and Vinnie venture into "enemy territory" to pick up the Black Widow Bike, and Senior express his frustration that he hasn't seen Mikey post-settlement. PJD assembles the FIST Bike while OCC creates the Power Probe Bike.
PJD works on a build for Gears of War 3, while the OCC crew builds a bike for Feather Free Zone. Meanwhile, with the OCC headquarters in foreclosure, Senior considers building a new shop at the front of his property or moving to the old OCC.
OCC starts a build for WyoTech, a school for budding mechanics, while PJD continues work on their Gears of War 3 trike. Then, WyoTech students visit OCC to help out, while the understaffed PJD crew wonders how to find talented mechanics.
Post-settlement, Senior tries to commission a painting from Mikey, but gets mixed signals from his son. OCC starts a build for Beck's, a family-owned hybrid-seed company that wants to build a reverse trike, while PJD works on a modern design for Cepheid, a medical diagnostics company.
Deciding he'd like to commission a painting, Senior continues to reach out to Mikey, who seeks counseling from Vinnie. In Atlanta, PJD reveals the bike for Cepheid, a medical technology company, to an impressed crowd, while in Indianapolis, OCC unveils the all-custom reverse trike for Beck's Hybrids as well as a bike to be used to raise money for the We Care for Orphans charity.
In celebration of its 100th anniversary, Dekalb commissions a bike from PJD to be auctioned off with the proceeds going to benefit the American Red Cross. Meanwhile, OCC begins a build for Cell Buckle, a company that builds cell-phone holders for vehicles, to be unveiled at Sturgis. But when a dissatisfied Senior decides they must start from scratch, an offended Jason does the unthinkable.
Mikey and Senior both say they want to meet up, but go back and forth about the conditions under which they will meet. Then, OCC works until the last second to complete their bike for US Biker Law.com, while PJD unveils their bike for Dekalb.
Junior lands the biggest job of his career when he is asked to build a bike inspired by the restoration of Ground Zero in NYC. Senior secures a build for a wealthy foreigner and rumors fly at both shops over Rick's assumed discontent at OCC.
A three-way build-off is announced and contender Jesse James throws down the gauntlet by sending vulgar cakes to OCC and PJD. OCC works on two bikes and Junior unveils the biggest build of his career at Ground Zero in NYC.