Oliver Jeffers, award-winning author of How to Catch a Star and Lost and Found, returns with an inter-galactic tale about a little boy seeking adventure.

One day a boy finds a plane in his cupboard. He flies his plane higher and higher until he runs out of petrol and lands on the moon. He is frightened, lost and alone until a passing Martian lands there too! Who is the strange alien? Can they be friends? And how will they find their way back home?