The exciting conclusion to The Sex Gates trilogy. The mystery of the sex gates has at last been solved, but a horrible dilemma arises. The masters of the sex gates are gone, but they have left a potential catastrophe behind. All the people who have gone into gates and disappeared will be coming back, including psychopaths, the horribly injured and the very elderly. There is no way to tell in advance what condition they will arrive in, other than that their sex will have been reversed. Lee and Rita find a way to use quantum worlds to avoid disgorging all these people back onto an earth that is finally settling down, but it involves risks that place his and Rita's life on the line. And just to complicate the problem, some of the seconders who are supposed to be helping turn out to have an agenda of their own, one which risks the whole human race!