Bradley and Barney begin their second series in Florida, where they visit the Palm Beach International Raceway and the home of the author Key West, and get close up to sharks.

The duo head to the Great Smoky Mountains on the Tennessee-North Carolina border and go canoeing. After a swig of whiskey, they experience clog dancing and chopping wood with the aid of competitive lumberjacks.

For the next leg of their journey, Bradley and Barney visit the Red River Gorge in Kentucky, before heading to the supposedly haunted Poasttown Elementary School in Middletown, Ohio. The next day, they travel to Louisville, birthplace of legendary boxer Muhammad Ali, where they follow in his footsteps by sparring at the local boxing gym. At the end of a long day, Barney rewards his dad with a well-earned meal at a KFC restaurant in Kentucky - the home state of the chain's founder Colonel Harland Sanders.

Bradley and Barney arrive in Ohio, where they head for Dayton - the birthplace of aviation - before the pair attend a local rodeo later that evening. Brad soon realises that they are not just there to spectate on the sport, they are also expected to take part. However, a nasty fall from an angry bull means Brad spends the rest of the night in hospital.

Bradley is on the mend following his rodeo injury and determined to get back behind the wheel of the RV. As the pair continue on their journey, Barney is thrilled to be celebrating his birthday with a trip to the iconic Niagara Falls. Later, Bradley and Barney take the RV on a small cargo ferry as they head to Vermont. Here, the pair have a go at ice climbing, which proves treacherous for them and the crew, before a spot of dog sledding through the frozen wilderness and an inevitable race through the forests.