In a parallel universe, female newborns vastly outnumber their male counterparts due to an inexplicable pandemic. As men become rarer, they're hailed as "national treasures," and women must win their affections in a government-sponsored competition called "Ready, Set, Love." When Day is unexpectedly accepted into the competition, she meets the most popular guy, Son. Their burgeoning love and the world as they know it are threatened when they uncover a conspiracy operating beneath the surface.