Synopsis
The Antimonitor uses Psycho Pirate (whom he captured in issue 3) to control the heroes of the last 3 known surviving earths’: 4, S and X, as he begins to destroy their universes while the other earths’ heroes from Earths 1 and 2 warn them about the antimatter attack.
Alex Luthor Jr. nearly sacrifices his unique matter/antimatter energies to transport all 3 universes into limbo alongside Earths 1 and 2, but Harbinger stops him and uses her powers instead. All fades to black and white as we then see all 5 earths and their universes now in limbo.