After sustaining life-changing injuries from an IED explosion in Afghanistan, Billy was assisted by an injured veterans charity who specialise in using motorsport to help with the rehabilitation process. Some years later and it's time to give something back to that charity. Billy, Titch and John are heading to the stunning landscape of Morocco to assist with a 1,100km desert expedition for 20 injured and sick veterans. Their role is to prepare and maintain the buggies and bikes that the veterans will be riding and help lead the group over the arduous desert route.

But before they head off, Titch, who can never resist a freebie, has saved a dilapidated piece of nautical history from the skip - a 1950s microsized sailboat called a SailFish, which was rather unkindly known in its day as the ‘ironing board of the sea'. With some TLC, Titch restores the craft to its former glory – in time for a wager with Billy, who has bet that Titch can't master the skills necessary to sail the tiny boat around Brownsea Island. Despite being ex Special Boat Service, sailing microyachts was never part of the job description, and Titch finds himself out of his depth. But with the loser having to run across the Twin Sails Bridge, naked Titch pulls out all the stops to try to win the wager.