Ryugeom Cheok, a loyal Goryeo warrior, throws himself off a cliff with his enemy to protect his master—only to be frozen in ice for 900 years. Awakened in the modern era, the greatest swordsman of Goryeo begins his journey of vengeance…
Despite her expertise in hacking, Ann Jiujiu's plan to steal a valuable gem from an auction went awry, resulting in the loss of her own child. Unexpectedly, she came across a child that was identical to her son but with a lower intelligence quotient. During her time hiding from the infamous Ji Jinchen, a formidable black wolf, the adorable fox An Jiujiu was captured by him. They eventually decided to train the fox to become a loyal canine, as escaping proved to be impossible. As time progressed, they fell in love, had two children, and exchanged vows.