Punktown's health agents are charged with keeping the public safe from infectious disease. Between inter-planetary travel, super-mutant strains of bacteria and criminal genetic manipulation they certainly keep busy. But for health agent Montgomery Black work is about to consume his life. The problem is a highly contagious and extremely deadly STD, mutstav six-seventy and cases are showing up everywhere. While trying to prevent the spread of the disease Black could lose everything that's important to him but there's no ignoring the suspicion that something far more sinister than the impartial hand of nature is behind the spread of this epidemic.