Cha Dae-woong is a spoiled brat with plans to become a successful action star. One day, on the run from his rich grandfather's latest fit of rage towards him, he accidentally frees a nine-tailed fox (gumiho) who has been imprisoned in a painting for 500 years. Frightened at first, he runs away to the woods and ends up getting seriously injured. Feeling indebted to him, gumiho gives him her " fox orb " a powerful part of her life force, to heal him. When he wakes up, the two form an awkward partnership, as Dae-woong begins to rely on the power of the orb to shoot his action sequences, while also giving in to Mi-ho's request to teach her how to act human. Though Dae-woong is initially acting out of fear, things start to change as he gradually begins to fall for her. However, Mi-ho will be faced with a terrible choice as her time in human form runs out in this heart-wrenching comedy.