The actor travels around the coast of the United States to discover what life is like on the surrounding islands. He sets off on a 10,000-mile journey from the west to the east, to explore the vast swathe of islands that are scattered beyond America's shores. The first port of call on his journey is Hawaii, and his exploration looks beyond its image as a tourist paradise, crammed with sun-kissed beaches and world-class surfing, and into the havoc wreaked by advancing lava fields and smoking craters. Leaving Hawaii, Martin flies 2,500 miles north to the islands of Alaska, where the contrast couldn't be more extreme, from tropical rain forests to snow-fringed glaciers, and from crowded beaches to some of America's most sparsely populated territories.

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Documentary