Tom and his sister Lucy are no strangers to adventure. But now they are ready for their biggest challenge yet – teaming up for a joint expedition. Inspired by great explorers, they set out to retrace an epic journey across America by canoe. Two hundred years ago, Meriwether Lewis and William Clark travelled into the wilderness; now it’s Tom and Lucy’s turn to paddle along mighty rivers, battle wild rapids and camp beneath endless starry skies. Along the way they discover what has changed – technology, the size of towns and cities, the people who live in them – and what has stayed the same: the physical hardship, the camaraderie and the pure thrill of adventure. Travel with them as they journey into history, test themselves against the wild and prove that exploration is never out of date.