- "Your universe is no more. Of 7.53 billion, 3 billion souls made it to Earth-1 on the armada of ships. I calculate 1 billion souls survived due to his noble sacrifice."
- —Mar Novu to Kara Danvers[src]
Earth-38 was evacuated after the quantum towers failed to hold off the antimatter wave. In the end, 3 billion citizens of Earth-38 were successfully evacuated. At least a billion were due to Oliver Queen's heroic efforts and refusing to abandon the defense of the quantum tower until he was overpowered and beaten to death by the shadow demons.
On December 10, 2019, Harbinger gathered select heroes of Earth-1 to Earth-38, which was being wiped out by a wave of antimatter. The quantum towers which Mar Novu placed on Earth-38 at the dawn of time helped hold off the antimatter for a short while. However, Mobius's army of shadow demons were quick to thwart their plans.
In defense of the quantum tower, the heroes of Earth-1 fought the shadow demons from a fortified position while Kara and Clark fought the shadow demons from outside. They manage to hold them off for a short while, but the quantum tower was struck and the skies were red once more. Kara and Clark were able to make the tower operational long enough for the evacuation to take place.
- "The battle is lost. We must retreat and save our resources for battles yet to come. [...] Oliver. It is time."
"Has the planet been evacuated yet!?"
"Then it's not time!"
- —Mar Novu and Oliver Queen argue over whether it's time to withdraw their forces from the fight to evacuate Earth-38's citizens.[src]
The heroes took one final stand on the roof of the tower. However, the Monitor told them the battle was lost and to save their resources for future battles. While the heroes continued to fight, the Monitor sent them to Earth-1 one at a time. When he told Oliver it was time to retreat, Oliver refused to leave until everyone was evacuated. As the Monitor tried to send Oliver back to Earth-1, Oliver fired a specialized arrow that managed to temporarily disable the Monitor's powers. Oliver continued to fight off the shadow demons until he ran out of arrows. As the creatures swarmed around Oliver, he took one final stand; dropping his bow and charged towards the army. As Earth-38 was hit by the antimatter wave, the Monitor brought Oliver back to Earth-1, but the latter had already sustained fatal injuries, and died minutes later.
In the end, there were an estimated three billion evacuated, with one billion making it to safety due to Oliver staying behind and continuing to fight off the shadow demons to his last breath.
Unfortunately, Oliver's sacrifice was in vain as Mobius was ultimately successful in destroying the multiverse, including Earth-1, meaning the refugees from Earth-38 were still doomed and were killed.