Finnigan Sinister and Ramone Dexter are gunsharks: hired killers with chalk outlines round their souls. Need a 'removal'? Call the gun-lovin' criminals! The boys have killed their old boss, 'Holy' Moses Tannenbaum, and created a new force in Downlode's underworld - Moses' former wife, the sultry Demi Octavo. Now they're back from a somewhat urgent vacation - and Demi's got a new job for them...teaching her younger sister Billi how to be a gunshark! Now the boys have to keep Billi in one piece AND keep business running as smoothly as usual - not that 'smooth' is the way things usually turn out in Downlode . . .