Afteracometreleasesamysteriousvirusthatbeginstokillallofthewomenintheworld,ayoungcouplesrelationshipisseverelytested.Theyhideout(fromboththeillnessandthesavageswhohunttheremainingwomen)intheirover-sterilizedapartment.Ultimatelytheduoescapestheirself-imposedquarantinetoheadtothewildernessforonefinalexperiencetogether.