When Hela saw Surtur begin destroying Asgard, she had already abandoned Thor and the others, intending to take her Undead Army and Fenrir up to fight him to the death.
But she had only taken a few steps when the "God of Thieves," whom she should have stabbed to death earlier, suddenly appeared and started trading blows with Surtur. As they fought, he even summoned an Iron Golem bigger than Surtur, and the two destroyed each other.
That whole chain of events had happened so suddenly that Hela could not process it.
Thor and the others were equally stunned. With Surtur appearing and distracting Hela, they had been planning to seize the chance to reach Heimdall and escape to Earth through the Bifrost. Then some inexplicable Iron Golem suddenly appeared and pummeled Surtur to death in a few blows.
What was supposed to happen to Ragnarok now?
Thor looked utterly lost.
"Thor, did this iron giant appear in your dreams?"
Covered in blood, Sif came to Thor's side and asked in confusion.
"No, it didn't..."
Still looking utterly lost, Thor answered automatically.
Just then, Loki ran over, his face filled with lingering fear.
He had been halfway there when he saw the Puppet pilot who had once tried to kill him taking on Surtur. At first, Loki had mocked the Earthling for not knowing his limits. Who could have imagined that he would whip out something even nastier and crush Surtur with it?
At the thought that this dangerous Earthling apparently had his sights set on his life, Loki shuddered and sprinted frantically toward Thor.
"Brother! You have to save me!"
Before Thor could ask what was going on, Loki begged him for help.
"What happened? Is Hela coming?!"
Snapping out of his daze, Thor tensed and shielded Loki behind