Challengers of the Unknown #80

In "The Day The Earth Blew Up," the Challengers of the Unknown are summoned when two scientists vanish in Antarctica, leaving behind a mystery that baffles Pentagon experts. As Ace, Rocky, and Red race to the frozen south, they’re joined by Prof, only to find a volcano erupting from the ocean floor near New Guinea—and a strange bridge of unknown origin beneath the ice. When the team splits, Ace and Rocky fall through thin ice, landing on the bridge, while Prof and Red are captured by eerie, orange-clad aliens in bubble-suits.

In "Chapter Two: The Tyrans," the Challengers of the Unknown find themselves trapped in a vast underground airshaft, descending deep beneath the Earth’s surface. As Ace and Rocky navigate the endless tunnels, they stumble upon a hidden alien city where an army prepares for a global invasion. With the fate of Earth hanging in the balance, the team must outthink their foes and act before the aliens unleash their plan to reshape the planet.

In "Chapter Three: The Thing That Came Out of the Sea," the Challengers of the Unknown face a terrifying alien threat when a monstrous claw-machine erupts from the Pacific to assault the Navy. After hypnotizing an alien and uncovering a gravity control room, the team races to stop a planet-threatening bomb, splitting their efforts between disabling the detonator, evacuating under siege, and summoning military aid—all while battling deadly gas attacks and collapsing tunnels.

In "Chapter Four: One Minute to Doom," the Challengers of the Unknown face a ticking clock as a mysterious alien device threatens to unleash destruction on a remote Pacific island. With time running out, Red deploys a secret chemical weapon to disable the machine, setting off a chain of events that leads Ace to rally a fleet of bombers in a final assault on the alien base. The fate of the island hangs in the balance, and the team’s resolve is tested like never before.