If history had been kinder, aviator Wally Funk might have become the first woman on the Moon. In the early 1960s, she was one of 13 female pilots who passed the same physical tests as the Mercury 7 astronauts. Unfortunately her chance never came and no one has walked on the Moon since 1972, after the cancellation of the Apollo space programme. But today, space agencies and commercial companies around the world are preparing to return to the lunar surface and Wally meets the scientists and entrepreneurs trying to make this a reality.