The Moon spent fifty years as an afterthought after Apollo ended, dismissed as a dry, barren rock. Host Dara O Briain traces how it became the destination again through NASA's Artemis program, which aims not just to land astronauts but to build a permanent base. The film moves from Cold War-era radio astronomy at Jodrell Bank, used to piece together the Moon's hidden far side, to more recent discoveries of billions of tons of water ice locked in polar craters. Engineers explain why lunar dust behaves more like shattered glass than beach sand, tough enough to wreck equipment, and how video game rendering technology is now being repurposed to simulate landing conditions and train systems before hardware ever leaves Earth. Interviews with scientists and engineers cover the practical problems of returning: radiation, terrain, resources, and the technical steps required before anyone can talk seriously about Mars. The result is a grounded account of what building an off-world outpost actually requires.