"It will be all out war!" Artemis whispered with a grave look.
The premise might seem simple, but since the primordial gods have left earth and their solar system for so long the present gods claimed it as theirs. Now if such a humongous power returned, it will threaten the gods equally.
Especially the three top Olympiads. They will not watch by as the earth gets destroyed by their forefathers.
Without earth there will be no humans and without humans, the gods will lose all their powers. After all, their powers come from the belief that humans had on them. Even thought that the belief had reduced exponentially as time went on, it still was enough for major gods to exist.