Kwon Jiyong was a man in love. While traveling in Japan, he had the misfortune of coming across a powerful and ruthless witch that had fallen for him. The witch asked Jiyong to stay in Japan with her, but he went back to his home in Korea to be with the girl he loved. Jiyong rejecting the witch caused her to become angry and so she cursed him by turning him into a fox that lives 1,000 years, unable to die, eventually making him Gumiho.

"Because you have rejected me, you will watch all those you love die while you live 1,000 years as an animal and then an eternity as a Gumiho."

These were the last words the witch said to Jiyong just before giving him her curse. These words, of course, became a reality. Jiyong lived 1,000 years as a fox and watched in the shadows as the girl he loved fell in love again, married, had children and then grow old, eventually dying. He then watched as her children and her children's children did the same. Each moment of this killed Jiyong on the inside, but he couldn't physically die. After 300 years of watching this, Jiyong grew tired and spent the rest of his 700 years as a fox playing the part of an actual fox, keeping away from what should have been his descendants. 

Now, in the year of 2012, Jiyong has finally become a Gumiho, and able to transform into his human-self, only this is just his appearance. Not only has he become a Gumiho, he has become thirsty for the hearts of young women. Because of this thirst, Jiyong finds himself in an art museum, in search of women when he sees a familiar looking face that stops his heart: the face of the woman he loved 1,000 years ago. Only it's not her. It's one of the museum's tour guides, Park Soojin. It was love at first sight again. Jiyong must decide whether to ignore his hunger and let himself fall for Soojin or eat to Soojin's heart.