Get ready for life after Earth! Earth is only a memory — destroyed by the Drej, a deadly race of alien beings composed entirely of energy. What's left of the human race has scattered across a hostile, alien-dominated galax6y. On Tau-14, a third-rate asteroid, Cale Tucker has grown into a rebellious teenager with only a dim, unhappy recollection of the planet... and father... that he left behind. He soon learns, however, that the ring his father gave him as a small boy contains a map to a legendary spacecraft — the Titan, a ship that could hold the secret of salvation for the human race. With the aid of Joe Korso, captain of the Valkyrie, his beautiful pilot, Akima, and a ragtag crew of assorted Space aliens, Cale embarks on an adventure through space in search of the Titan. But his quest is no longer a secret. The Drej have discovered what Cale possesses. And they will stop at nothing to prevent him from completing his mission.