After an accident, Zhou Yanbai—whose ghostly yang constitution has long been suppressed by his mother Gu Qingyao's nightly assaults—panics over a miscalculated cycle and pulls out his yang organ, leaking a trace of yang energy. His grandfather reinforces the seal overnight, but the disaster has already found them. The fox spirit in the back hills and the female ghost in the graveyard already know, and the demons and monsters around the village are stirring. All they need is one union to become immortals.