A light in a dark place. That’s what the crew’s resident hippie, Bucky, has spent most of his life trying to be. And now, deep below the Earth’s crust, he’s trapped in the darkest place he’s ever been. The crew learns that working for ONIS is more dangerous than they possibly could have imagined, as the secret that lies at the center of the earth is finally revealed. A daring recovery mission offers their only chance at salvation. But will the cost be too much for them to bear?