Something Dark

Once when the supernaturals lived in secret, the humans ran rampant destroying the only world they could inhabit. Every year, the world temperature would increase, the sea levels continuously rise, and one day everything was flooded. Most of the humans perished, but those that lived in higher regions of the earth escaped the floods, the supernaturals, with their magic, survived the flooding.
But now they must survive the humans that found out about their existence, the hunters. The supernaturals clustered from their before world of living together in harmony, they separated into groups of their species, werewolves with werewolves, witches with witches, but there were others that believed if they hid with the humans that weren't hunters.
And from then on, the supernaturals lived again some in happiness as they no longer have to hide their themselves but fear because of the hunters.
Atlantis understands this more than most, as she was one of the supernaturals that hid in an area with the non-hunters when one night her parents were murdered and her sister was taken, she has now vowed to hunt the hunters because she will no longer be the prey.