The male protagonist Lan Feng comes from a family of cultivators in the demon world named Lan Feng. When he was young, he contracted a mysterious disease during an outing, which caused his cultivation to deteriorate and his lifespan to be short. The hero's grandfather, Langao, once went out to find medicine for Lan Feng and met Mr. Ghost, Gui Shi. Later, Langao gave up the opportunity and asked Gui Shi to treat the hero Lan Feng. An accident occurred during Gui Shi's treatment with Lan Feng, which led to Lan Feng entering into a companion beast contract with the mysterious black egg. The hatch of the mysterious black egg turned out to be the evil flying dragon Zangyue that can kill gods...
