Loki's plan had gone fairly smoothly. Storm, the Mutant guarding the place, deliberately left an opening and let a small squad of Dark Elves through. The strongest among them, the Cursed Warrior, specialized in countering magic. Loki pretended to be defeated and was successfully captured by him.
What had not gone smoothly was that just after Loki was taken away, Thor appeared from nowhere and slaughtered nearly every Dark Elf in sight as easily as chopping vegetables, declaring them traitors to the Nine Realms.
Thor's appearance finally put the commanders of the Three Great Empires at ease. After all, they had heard of this warrior before. His continued absence had always been a potential threat. Now that he had finally shown himself, regardless of how strong he was, they could at least figure out how to deal with him.
After Loki was captured, he was naturally interrogated. However, the Skrull Empire was not carbon-based life and was not skilled at torture. At most, they could use a brainwave scanner to read surface-level thoughts. Loki was also very cooperative, giving them the locations of the World-Ending Giant Wolf, Jörmungandr, and the Dark Dragon.
The World-Ending Giant Wolf was beneath Hela's palace in the Underworld, bound by a special chain that could only be undone with a spell known to Frigga, the Queen of the Gods. To release Fenrir, they first had to go to the Queen of the Gods' chambers in Vanaheim, then sneak into the Underworld while Hela was distracted.
Jörmungandr was on Earth, but outside the magical defense network rather than within it. Legend said that the great serpent encircled the planet and required special magic to awaken and reveal itself. That magic was in the realm of the Fire Giants.
The Dark Dragon had always been at the