An Lin, a girl with depression, enters the demon world by mistake and survives under the protection of Yu Feng, the personification of the wind. Yufeng is a young man with wings. It controls the wind and is also the incarnation of wind. Protect An Lin in the demon world. With Yu Feng's company, An Lin's depression gradually improved. But just when they thought they could live happily forever like fairy tales... Their story changed drastically.