Long ago, a race of genetically enhanced humans was created to keep the inhabitants of Earth away from the fantastical denizens of Eon, a supernatural alternate dimension. Rune Jenkins, her twin brother Ryker, and their friend Grey Malteer have been taken to Eon, and told that they themselves are Venators descended from the those great human warriors of the past. They must find a way to survive and return home, before the leaders of this dark world decide to use them for their own power-hungry plans.