The rugged stretch between Boston and the Canadian border is the final leg of our journey up the East Coast of the USA. On the coast of New Hampshire, we meet Shauna Fraser, an instructor giving paddleboard yoga classes.

The unstable surface of a paddleboard makes yoga challenging for the body and mind alike. Next, we cross over into the state of Maine, where craftsmen use hand tools and traditional boatbuilding techniques to build bespoke and beautiful wooden surfboards.

Mike and his team find time to test out some of the surfboards they've built. Nearby, we visit a pier that once had a ballroom and hosted some of the biggest names in US music history, and a lighthouse commissioned by George Washington himself.

Deep in the Maine woods, sawmill owner Alan Higgins shows us how he gets along just fine by repairing and reusing what he has. When he’s not hard at work at the mill, he can be found tinkering with trucks and old sports cars in his yard.

Machines and the sawmill are not Alan’s only interests. He’s also an enthusiastic musician, with dreams of getting his own song played on the radio. Along the Maine coast, oysters are farmed where the rivers and creeks meet the sea, and we meet Judy, who’s been a waitress at her family’s restaurant for over forty years.

Over decades, Moody’s Diner has become a social hub for its long-standing customers, and any change to its décor and menu can only happen with their agreement! Maine’s Penobscot Bay, with its many islands, is famous for lobsters and sailing, and it’s here we meet Tomás Sowles, a young commercial pilot loading his plane for an early morning flight.

Tomás is sometimes greeted with incredulity by new passengers who can't believe he's so young. But the pilot has already racked up hundreds of flights between the remote island communities of Penobscot Bay, often navigating rough, unpaved forest landing strips.

Tomás’s responsibilities go far beyond the basic flying of the plane. He must weigh the risks to himself and his passengers before setting out on every route. On Isle au Haut, a small island where Tomás’s plane cannot land, Professor Marshall Chapman is waiting for some important mail to arrive by boat.