A bus crashes into Billy Monroe, ending his life. But not how you might think. Unharmed, the boy walks away from the crash with phenomenal strength, far beyond that of any mortal. Then his real life begins. Billy enters a subterranean city called Meridian, a home for those who do not fit into the surface world. There, he learns of a prophecy predicting his arrival, hinting at a great danger that will threaten not only Meridian but the entire planet. Armed with immortality, Billy sets forth with his new friends on a quest to save the first home to accept him for who he really is. Along the way, Billy will solve riddles and travel to the realm of the dead. But is he really as invulnerable as he believes?