A young woman lets her boyfriend talk her into a scheme to roll drunk guys at the local clubs, but one night she gets much, much more than she ever expected when the mark turns the tables on them.
Adam is of a species with many workers, a small group of breeding females, and a single male to bind them all chemically and to impregnate them: him. When his own daughters reach puberty, he must move on to avoid harmful inbreeding. His first new assignment has a lurking moral problem, and the next one is as a "contract" king bee.
People can tumble into an isolated valley, but they can never leave. The original pair multiplies to make a thriving community. Then an infection robs all males of both virility and fertility. Community survival depends on a few men with normal sex drives who fall in. For some reason they all die during their sixth night (though they don't believe they will). Women have mixed feelings, but they make the most of the time the men have.
Beautiful young girl seduces her twin brother. They continue to make love. She forgot to take her pill and ends up pregnant. Her BFF from high school makes love with him at college while she is at home with her pregnancy.