Moon Ga-ram is a fox spirit who must obtain positive energy (yang-gi) from humans. Thanks to her (?) trashy ex-boyfriends, Ga-ram hasn't been able to absorb 'yang-gi' for a while, and strange symptoms due to hunger gradually begin to appear in her body.

At that moment, her childhood friend, Han Pu-reum, who looks healthy and delicious, catches her eye....

“How about it? Don't you want to try it with a fox?”