Sangun, the tiger lord of Baek Mountain, was living a peaceful life until a young, white-haired girl named Choa visits his cave, claiming to be his bride. Sangun immediately realizes that Choa is a descendant of the White-blooded Demon Beast, a dangerous creature feared by all spirits and beasts. He tries to send her away for fear of the dangers she will bring, but changes his mind upon discovering that she has nowhere to go. Unfortunately for him, this marks the beginning of his hardships...