The Day Gabriel Chrome, a failed book sculptor contemplating suicide on the Thames Embankment, stumbled on the suicide bid of the naked Camilla Greylaw, was a day of hopeful redemption for a corrupt and violent world. For the lovely form that he chanced to preserve was the sole carrier of a contagious venereal disease. A bug which could inhibit the aggressive instinct, rendering total placidity in all humans. At once Gabriel's life has new meaning and purpose. To save mankind becomes his hardened ambition. But mankind seems far from hope.