The year is 2069. Plagues have destroyed major food sources, and a virus has infected the vast majority of earth's inhabitants. The virus can be overcome, but only through complete blood transfusion. This is why blood has become the new currency: it is banked, traded, and speculated in. But only by the few who are wealthy enough to have a clean source.

The moon is now a penal colony, a sexual pleasure dome, and home to the most important blood bank around. This bank is watched over by one massive computer, and that computer's security systems were devised by one man: Dallas. Playing by the system's rules, Dallas has become wealthy.

But then his daughter is struck down by a blood disease requiring repeated transfusions. Now he is the security risk, and the perfect player has become a target.