Following their quick dispatch at the hands of the newest threat to the Fathom Universe, Aspen Matthews and Doc Blue must re-group and figure out a new way to confront this God-level threat. However, the pair discovers that only two of them are not enough to save the world-and the Blue and Humans must combine forces in order to save the threat of existence for both civilizations. The largest event in Fathom's history culminates right here!