Sr. and the guys are commissioned for a "wheelchair chopper" for the Christopher and Dana Reeve Foundation. When Paul Jr. makes his first visit to OCC in over four months, it's clear that the family divide is as deep as ever and only getting worse.
Sr. and the guys are faced with one of OCC's most complex and challenging builds ever - a hybrid chopper for Schneider Electric. After Paul Sr. cleans out his garage he shows up on Paul Jr.'s doorstep and offloads some baggage.
Sr. and the guys work on a big bad chopper for their newest client, Gladiator Garageworks. Mikey faces his fears and attempts to perform his comedy routine in front of a live audience. Jr. drops in to Adam Carolla's Podcast and discusses life after OCC.
The guys at OCC work to create the first ever diesel powered chopper for the Monster Diesel Inc. Jr. attends the grand opening of the new dog park he's designed for his hometown of Newburgh, NY. Mikey sets his fears aside to perform his stand up routine.
Sr. and the guys design a NASCAR inspired chopper for the Stewart - Haas racing team. Mikey puts his physical capabilities to the test and heads to Death Valley to participate in JDRF's Ride to Cure Diabetes. And Paul Jr. pitches a new line of dog toys.
The guys at OCC are tapped by Kobalt to build them a custom chopper. With a brand new set of tools Sr. and his team get busy designing and building an incredibly unique chopper. Jr. gathers the family together and makes a truly life changing announcement.
After such a big battle, you'd think the show would be done. But it's back, in this season premiere of Senior vs. Junior. Senior is well-rooted for battle, but Junior plans on destroying his dad's business regardless; by building a rival shop just around the corner. Of course Mikey will be there along with an old friend Vinnie.
OCC builds a ramp to launch a dummy dressed as Junior over a creek. Meanwhile, Junior and his team begin fabricating their very first chopper. Junior realizes that he needs help in the paint department so he recruits his old friend Nubs to the team.
Senior and the team at OCC are tapped to build a bike for the FBI and the local Newburgh Police Department. Meanwhile the guys at PJD are furiously attempting to fabricate both the Geico bike and the Anti-Venom bike in time for the bike rally in Sturgis, SD.
OCC and PJD arrive at Sturgis to face off for the first time to see who will have the better bike. Junior wonders whether Senior will show his support by attending one of his reveals, but Senior has no interest in seeing either of his son's first bikes.
The OCC crew continues building the Blackhawks bike while Junior meets with representatives from Carolina Carports who want PJD to build a bike for their company. Later, Senior makes an important decision agreeing to meet with a therapist for Mikey.
PJD continues to work on the Carolina Carports bike, as the Hair Club for Men hires Senior and OCC. When Mikey confesses to Junior that he is losing hope in Senior, Junior advises his brother to protect himself. Senior finally agrees to Mikey's terms and visits a therapist, but Mikey's not impressed. Finally, Junior travels to North Carolina to unveil his bike to a crowd of 400,000.