The little fox demon Jiuwei sneaked into Yaochi to steal the "Yaochi Immortal Fruit", but was captured by the Immortal Lord Lingxu. Lingxu saw that Jiuwei was very spiritual and couldn't bear to hurt her, so he kept her by his side as a maid. Nine Tails is naughty and mischievous, often causing trouble for Lingxu, but it also brings vitality to the cold fairy palace. As Lingxu got along with Jiuwei, he was gradually moved by her liveliness and cuteness, and his cold heart gradually melted. However, the world of immortality does not allow immortals and demons to fall in love. The elders of Yaochi strongly opposed it, which also attracted the pursuit of demon subduing masters. In order to protect Jiuwei, Lingxu did not hesitate to fight against the entire world of immortal cultivation. Jiuwei also gave up his demon power to practice immortal magic for Lingxu. The two worked together to resolve the crisis and proved that immortals and monsters can also have true love.