Because they were so fed up with being oppressed and exploited by the bastards in heaven, human stood up to fight to regain justice for themselves, but they were still too weak to defeat those in heaven. Not only that, they also made them angry and wreaked havoc everywhere. Alex is hiding in a cave with the survivors and discussing another plan because right now it's impossible to attack and even more impossible to retreat

"Or we should make a deal with the dragon clan, only they can help us"

"but how can I help them while they're trapped in a lava cave by those bastards?"

Alex heard that and immediately said he would go there himself to discuss matters with them because the dragon clan also hated heaven for tricking them into guarding monsters in the lava cave. He went to the lava cave and went deeper inside. It was very hot inside with the bright red color of lava, the sound of iron chains clanging. A set of claws appeared to press him down, and the dragon clan appeared. They were all chained up with the monsters

"who are you?"

"I...I'm Alex and I came here because I want to make a deal with you"

dragon clan looked at each other and then at him

"contract?"

"yes, we are standing up against the heavenly family but they are too strong so we need your help"