Running away from a couple of bullies, Joe Hunter suddenly finds himself in the strange world of the Carcassian people. Suspected as a terrorist, traitor or spy, he's attached to Kaia and sent to join her on the 'Crystal Run' – a dangerous journey through enemy Kanabian territory to replace the precious crystals that power the protective Carcassian shield. He really wants to return to Earth but he soon finds himself fighting for survival and forming a close friendship with Kaia. Now he has another goal – Kaia will die when she completes her mission and Joe's determined to find a way to keep her alive.