Beneath the modern city lies a hidden world inhabited by ancient cultivators, people with awakened supernatural powers, and spirits and monsters. The Age of Declining Dharma, when spiritual energy has grown scarce, has lasted for a thousand years. Yet faint traces of spiritual energy still linger at the city's leyline nodes, buried within its steel and concrete, and can still be used. The emotions and obsessions of countless ordinary people also coalesce into wishes and resentments, becoming new resources for cultivation. The protagonist stumbles into this world, coping with the pressures of everyday life amid the urban jungle while pursuing the path to immortality and uncovering the secret ties between modern society and ancient traditions.