At her sacred bonding ceremony, snow leopard princess Diana is rejected by all three fated mates and betrayed by the maid who stole her first love. Desperate to protect her dying tribe, she invokes an ancient Moonstone law and chooses Carl, a chained arena slave, as her beast husband. Everyone mocks her for marrying beneath her, until Carl’s Silver Tiger bloodline awakens and Diana carries his legendary heir. As jealous ex-lovers, rival tribes, and royal conspiracies close in, Diana rises from public disgrace to unstoppable queen, while the man everyone called a slave reveals himself as Emperor Yuan.