After the world was destroyed on Doomsday, a second moon reappeared above the sky. No one knew how it got there or why the world ended. For Jex, he was more than happy to live his life selling scraps from the underground city. That is until four strangers show up in Jex's store and make a suspicious request. To take them underground. Soon, Jex must help the foreigners uncover the dangerous secret of Pandora's Box and the mysteries of the Second Moon. But it isn't as easy as it sounds when the Titans' ringleader, Kronos, is after the team. In the quest for Pandora's Box, Jex will have to fight harder than ever to save the ones he has learned to love-or lose them.