Rin, the sole heir of the White Nine-Tailed Fox clan, was kidnapped as a child by the Black Nine-Tailed Fox and raised in darkness. On her 20th birthday, she plans to escape—once her fox powers finally awaken. But fate has a cruel twist in store: her destined mate is revealed to be Hyun Dong-joo, the cold and powerful leader of the Black Nine-Tailed Fox. Rin and Hyun Dong-joo resent one another and reject the bond. But just when White Fox leader Baek Do-yoon steps forward and claims Rin as his fated partner, Hyun Dong-joo suddenly declares he will marry her instead. Who will truly be Rin’s fated mate?