 The Spectre unites the heroes and villains by warning them about the Anti-Monitor's plan; the heroes travel back in time to stop the Anti-Monitor, while the villains travel back in time to the ancient planet Oa to prevent renegade scientist Krona from creating the technology necessary for the Anti-Monitor's plan to succeed.The villains fail, and Krona continues his experiment.The Anti-Monitor waits for Alex Luthor to reopen the portal between the positive and antimatter universes, capturing the heroes, but a magically empowered Spectre creates an energy overload which shatters space and time.