A pair of new projects have the guys at OCC busy as the work on a B-2 Bomber bike for Northrop Grumman and the other bike will be saluting the NHL. An argument between Paul Sr. and Paul Jr. has the company's foundation rocking.
Junior is in search of a new project to keep him busy now that he is fired from OCC. Senior and the rest of the crew spend some time clowning around at a circus, and start on a bike to honor the Woodstock music festival.
The crew struggles to work without Junior at OCC. Meanwhile, Senior offers to create a bike for both of the companies, DECA and Columet, in exchange for their services.
Senior meets Governor Sarah Palin when he takes a trip to Alaska to research a bike. Next he heads off to Finland in hopes of introducing OCC to Europe.
Sr. designs a bike for he masses to mark he occasion of OCC's 10th anniversary. He's also penned a book and has been invited to ring the NYSE bell, and is set to appear on some famous late night talk shows to promote it. Meanwhile, Jr. and his girlfriend work on opening a women's boutique.
Paul Sr. attempts to make amends with Paulie Jr. now that he is no longer working at OCC. He invites Jr. and Mikey his home to work on the Triumph Bike project, just for fun.
While Paul Sr. is away from the shop promoting his new book on talk shows, he asks Paul Jr. to keep watch at the shop as a consultant to help keep the production of the Mt. Creek bike running smoothly.
The crew from OCC take a trip to Howe Caverns to explore the deep underground caves and to face their fears. Paul Jr. works on his own projects outside the shop, while still acting as a consultant at OCC.
OCC partners up with industry giant Ducati, in an effort to continue their business expansion. Each of the guys give their opinion on these Italian bikes as the OCC celebrates a 4-day long 10th anniversary party.
The Teutul's head to the Pennsylvanian home of Jon Gosselin, from the TLC series, Jon & Kate Plus 8, after being commissioned to build a bike for them. They wind up with a first hand look at how the family of 10 live.
OCC receives an important international client when the Abu Dhabi police department hires them to build a bike for them. Senior feels this will be a great way to expand the OCC international reach and takes a trip to the Middle East.
OCC goes green by attempting to build the first clean-burning natural gas powered bike for the Chesapeake Energy Corporation. Their vision and ingenuity will be put to the test...can a bike be built which is energy efficient and still perform as a chopper? Meanwhile, at Paul Jr. Designs, Paul Jr. gets his first client in Coleman which wants him to put a new spin on a current product. Elsewhere at OCC, Mikey begins questioning his relationship with his father and role at the shop.
With Junior and Mickey squeezed from the family business, life goes on with some changes. Meanwhile, the crew build a bike for the Saginaw Chippewa Indian tribe.
A truce is made between Paul Sr. and his sons as they make an appearance on "Larry King Live.'' Later, Paul Jr. makes his first solo appearance since leaving OCC by heading to the Midwest.
OCC is asked to build a chopper trike. Meanwhile, Paul Sr. learns that Mikey is in rehab.
The guys build a "wheelchair chopper" for the Christopher and Dana Reeve Foundation. Meanwhile, Jr. makes his first visit to the shop in more than four months.