When one of the infamous Gantlet Brothers is slain in an assassination that was intended to kill them all, the remaining brothers go on the warpath. From the sunny shores of Puerto Rico to the dank back alleys of London, and behind the Iron Curtain of communist Czechoslovakia, the Gantlets hunt the cadre of assassins responsible for their brother's death, uncovering conspiracies and plots as they work their way back to the criminal warlord that is behind it all.