A princess scorned for her weak spirit powers and a neglected prince abused within the royal family are pushed into an arranged marriage. Neither cares who they marry as long as it offers an escape from their miserable lives. Three years later, however, their relationship has become far more intense than expected. Exhausted by their passionate nights, the princess decides it is time to rewrite their marriage contract—starting with a very specific rule about how often they are expected to share a bed for the sake of producing an heir.