Superman #8

In "Jornada no Hipertempo - Parte Um: A Teoria do Big Bang!", Superboy's mysterious jacket triggers a surge of energy that sends Wonder Woman spiraling through fractured realities. When the young hero collapses, declaring that "Blackness coming...This Earth next...", the JLA races to uncover the truth behind his dying words—and the strange, New Gods-powered jacket that may hold the key to Hypertime itself. With the fate of Earth hanging in the balance, Superboy is launched into space on a missile, awakening in a Batcave where an alternate Batman and a Superboy-Robin await, their world unlike any he’s known.

In "Jornada no Hipertempo - Parte Dois: Se um Superboy é Pouco, Dois são Demais...", Conner-Superboy is mistaken for an agent of Black Zero by an alternate Superboy and his ally, alt-Knockout, leading to a clash that triggers his hyper-jacket. Sent tumbling through countless realities, he encounters an alternate Justice Society of America wary of Black Zero’s reach—only to be attacked by Stormguards. When his hyper-jacket flares with nuclear energy, a second Superboy appears, hurling it away to prevent disaster. Back at the Kents, Clark-Superboy brings Conner home, only to discover their identical appearances mask a startling difference: their fingerprints don’t match. Meanwhile, Mickey Cannon and Colonel Winterborne, left without their protégé, begin planning how to replace him.

In "Jornada no Hipertempo - Parte Três: Dividido por Zero," the two Superboys are torn apart when Stormguards ambush them, teleporting Clark away. Black Zero reveals a dark alternate truth: on this world, Superman died, and a clone raised in secrecy grew into a tyrant who now rules from Cadmus as Black Zero, his army forged from cloned Guardians and fallen heroes. As the threat of a new Doomsday army looms, Conner-Superboy faces a chilling question — can the ideals of Superman truly stand against a world where that hero’s legacy was twisted into tyranny?

In "Jornada no Hipertempo - Parte Quatro: Para Cada Mundo... Um Apocalypse!", Knockout and the Challengers of the Unknown crash into Black Zero's fortress, only to learn the devastating truth: Westfield burned her Superboy alive when he donned the hyper-jacket. As Black Zero prepares to erase her, the heroes surrender—only to reveal a shocking secret: they are the original Challengers from Superboy’s world, vanished long ago. Trapped in the Doomsday Chamber, the truth unfolds as the Doomsdays begin to break free, and Knockout, now alone without her Superboy, makes her final stand.

In "Jornada no Hipertempo - Parte Cinco: Tolerância Zero," Black Zero's plan to invade Superboy's world reaches a fever pitch as he traps the Doomsdays in a dead Hyperzone and pushes forward with his assault. With the Legion of Superboys freed and chaos erupting, the Challengers fight on while Prof Haley turns to Metron for help—only to send the alt-Superboys fleeing through Hypertime. As Ace pilots a desperate course through the wild currents of Hypertime, Superboy confronts Black Zero in a bid for redemption. When the Challengers' ship crashes into the Hyperium Reactor, the crew battles the storm's fury—only for Red to be torn away, and the team to vanish into a blinding white light.

In "Jornada no Hipertempo - Epílogo: Hipertempo de Voltar!", Superboy, Ace, Prof, and June Walker race against time when the Hypershuttle crashes into the Planet Krypton restaurant, scattering their team. With Red missing and Prof holding onto a fragment of hyperium and secrets about Hypertime, the group prepares to dive back into the chaotic timestream to bring him home. June, revealed to be a long-time Challenger, and the mysterious Mr. Carter—unveiled as Rip Hunter—join forces as Superboy departs for Cadmus, where a new generation of heroes stands ready to take his place. Amid shifting identities and hidden pasts, Heat Wave’s attempt at redemption leads to a shocking confrontation with Hawk and Dove, setting the stage for a high-stakes mission through the folds of time.