Space travel runs in Mike Goldwing's family: both his father and grandfather were astronauts. But the twelve-year-old's estranged grandfather, Frank, has lived a life isolated after missing out on the chance to make history as a member of the Apollo XI crew. When Mike discovers that an eccentric billionaire plans to fly to the moon, claim its vast, valuable mineral resources, and destroy the American flag planted by the Apollo XI astronauts, the countdown to a spectacular adventure begins!