Touch is lethal. Love is dangerous. Nobody is safe. For fifty years, the Key Corporation has defended humanity against a deadly plague that spreads through touch. Lovers don't hold hands, or even kiss. Personal boundaries are valued above all. Break the laws, and you'll face execution. Elodie, a talented young nurse, believes in the mission of the Key and has never questioned the laws that control her life. But Elodie is forced to break the rules...