When the ozone layer suddenly depletes over some parts of the world, the polar Ice caps melt and flood half of the world. The resulting radiation kills off half of the population and mutates the other half. Because of this the world's population is split into two: The dragons as people who got fire based powers when touched by UV radiation, and the krakens who got mutated when their villages were flooded with water. Eventually a way to coexist presents itself. But what happens when a former government agent who currently has amnesia is recruited by the President of the New United States of America to extract her daughter who's stuck in post apocalyptic London with danger closing in on her from every angle.