In the early 21st century, Tokyo has become a hub for groundbreaking computer science research and the rediscovery of ancient magic. A crime organization called Digital Beast has seized control of much of the new technological infrastructure, accumulating enough power to operate beyond the reach of normal law enforcement. A mercenary known as Lightning — Light for short — recently joined a secretive special group called Black Bird. His latest assignment sends him to investigate strange occurrences at the New Planning company building, a lead that may put him directly on Digital Beast's trail.