Walter Bullitt is a freelancer for the U.S. government, testing new psychotropics on himself and groups of unsuspecting citizens, and generally "fixing" things. His conscience has never impeded his work, until he's asked to get involved in a murderous plot to sabotage Bobby Kennedy's presidential campaign. Then a pair of ghosts start turning up in his apartment, begging him to provide some kind of help. While he's enjoying a Velvet Underground show at Max's Kansas City, two outre femmes fatales frogmarch him out, straight into a mission to save the world, both his own and the alternate one they've arrived from.