Twin babies are separated at birth. The girl grows up in a middle class environment, her brother in a street gang. Twelve years later, their paths cross again and they discover their common destiny, imposed upon them by the adults. It is the beginning of
Six months after the flooding of the valley much of the town's population have been evacuated, though some remain hoping to find loved ones taken by The Horde. An expert, Richard Berg, arrives tasked with finding the cause of the flood.