On cover: Leo's going to a place he's never been before: home.
Summary: Fifteen year old Leo has never set foot on Earth. Born and raised with twins Orion and Libra on the Moon 2 Space Station, they have grown up together in the most extraordinary of ways. Now, they are preparing to make their first trip home -- their first journey to Earth. But Leo, Orion and Libra cannot possibly imagine the irreversible consequences that their return will set into motion. (Back cover)