Chen Changsheng, the host of the Longevity System, awakens after ten years of slumber and discovers that Nian Ci, his childhood sweetheart, has married someone else. He makes a living at a coffin shop, where he meets Nian Ci's daughter, Li Niansheng. After Li Niansheng is found to possess an exceptional water spirit root, she joins an immortal sect, and Chen Changsheng sets out on foot for the Linglong Sect. Having learned the method of creating artificial spirit roots, he embarks on a long journey of wandering, becomes entangled in wars throughout the cultivation world, earns the name of the Undertaker, and gets drawn into layer upon layer of conspiracies. He eventually heads to the Forbidden Lands of the Ancient Wilderness in search of the missing Li Niansheng.