A dead metropolis. A strength-sapping bionic arm. A long-forgotten friend. John Osborne has a four-week lease on life. His survival depends on finding the Northland Core, an enigmatic power source hidden within the forsaken ruins of Minneapolis. With a whole city to scour and time growing short, John needs all the help he can get. When his former commanding officer arrives in Minneapolis and offers to assist, John can hardly refuse. But he's soon...