The year 2080, and drastic climate changes have altered the world as it once was. Recovering after a personal tragedy, marine biologist Sam McKay moves from Miami to the sea near a small Danish Island, where a domed underwater city has been constructed.
To begin with, Sam enjoys the simple existence and menial work as a window cleaner, but then he comes across not only a dark plot but also an ancient myth that might not be a fantasy after all...