body of Lex Luthor, who goes on a rampage. While the Green Lanterns fight Luthor, Supergirl Blue uses gold kryptonite to remove her powers, allowing her to age. Ator manages to stop Luthor, but Luthor uploads his mind into the city's computer, leaving Ator with an atomic bomb about to detonate. Ator contains the explosion with his power ring, but is trapped inside with the radiation. The now-powerless Supergirl Blue must stand by and watch Ator die. Century 26: History Lesson (Part 1) — Metron of the New Gods opens a portal that returns Superman to Earth, where he is attacked by Supergirl Blue and a superpowered Batman. After Superman convinces them of his identity, Batman tells him what has happened. In addition to the Parademons returning every 100 years to attack Smallville, civilization had been destroyed by Luthor. At one point Luthor blanketed the Earth in green kryptonite radiation, killing Clark Wayne and Supergirl Red, and managed to destroy all the OMACs, including the original, Buddy Blank. Supergirl Blue uses Luthor's serum to restore her powers and convinces Batman to use it as well. The two find that they are immune to kryptonite and finally defeat Luthor. Superman takes Batman and Supergirl to Smallville, where they find the body of Saturn Girl. He tells them the answer to the Parademon attacks lie in the future and flies off to the 30th century. Century 19: History Lesson (Part 2) — Seconds after Superman leaves, Supergirl hears a signal from underground. She digs up a box which contains Superman. His attempt to reach the future was blocked and he was hurled into the late 19th century. There, he meets Mister Miracle (who is the sheriff of Smallville) and Metron, as well as a young Jonathan Kent. Kent is seeking revenge against Jonah Hex, a bounty hunter that Kent claims killed 14 innocent men. A young Martha Clark begs Kent not to face Hex, but Kent is determined. In a showdown, Hex easily disarms Kent, then breaks Kent's glasses instead of killing him. Just then, the criminal that Hex was hunting appears and fires at Hex. Hex kills the criminal, but the shot meant for Hex hits Martha instead. Superman forces Metron to bring a doctor to save Martha's life, but her injuries mean that she will never have children. Jonathan tells Martha that they will get married as soon as she