In an alternate 1969, humanity's greatest achievement becomes its gravest mistake. The astronauts of Apollo 11 return from the moon not just as heroes, but as carriers of an ancient plague locked within a strange, obsidian rock. When the rock is breached in a Houston lab, the alien virus is unleashed, spawning a horde of slow, mindless, and relentlessly hungry zombies that bring civilization to its knees. As the world falls, virologist Dr. Evelyn Reed makes a horrifying discovery: the plague is not a disease that can be cured, but a biological terraforming agent that is overwriting humanity. With Earth lost, her mission shifts from saving the world to saving a remnant. Leading a small band of survivors across a shattered America, their only hope for survival lies in a desperate, impossible plan: to reach a top-secret prototype starship and flee to Mars. Apollo Z is a saga of survival horror and classic science fiction, chronicling the harrowing end of one world and the last, desperate flight to another, where the truth behind the apocalypse is more ancient and tragic than anyone could ever imagine.