It's 2020 and the world has fallen; humans have reverted back to their barbarian ways. After the Third World War, anarchy has ruled over the Earth. In an environment tolerating only the survival of the fittest, the story follows Se Ah, a girl with a mysterious past as she gets entangled with ragtag group of former secret operatives called GOT7. The meeting might seem coincidental but digging deeper, the two parties seem to have a shared history.