The white butterfly who has been practicing for thousands of years is actually a kind and loving white fox. She lives in Linghu Cave with her red fox sister Hu Hongdie and a little fox brother Wanwan. Once, my sister Hongdie went out to look for immortals, while Bai Huo and Wanwan stayed in the mountains to wait. By chance, she rescued the scholar Lu Zhi who was besieged by snake spirits. Bai Huo was surprised to find that Lu Zhi looked very similar to her sweetheart Xiao Qing, which reminded her of memories and sentiments about the past. The hurt Bai Huo didn't want to touch the wound, so he settled Lu Zhi and left secretly. But he found that he accidentally left something important with Lu Zhi. He could only follow Lu Zhi, waiting for an opportunity to get his things back. Unexpectedly, being bumped into by Lu Zhi would lead to a happy and tragic relationship... The fox said that every fox has its story; the fox also said, so what if we have been in love for a thousand years.