Wolves and foxes- living amongst humans, these arch rivals share one rule: Do not mix with each other. But Han Sirang, the head of the wolves, meets the fox Kim Ho at the most awkward moment- when Ho is having sex with another fox. With ulterior motives, Sirang takes advantage of this encounter to continue their relationship, and in spite of himself, Ho starts to get closer to Sirang. Trying to keep the relationship a secret, can they overcome unavoidable prejudices and pressures from both communities? Or is this relationship doomed to fail?