It tells the story of the young painter Yan Qing, who follows Yan Bo to study the art of communicating with mountains through ink and guarding them. The merchant He Jin opens mountains for mining, destroying the spiritual veins of Moling Village, which breeds the ink nightmare black mist formed by greed, and disasters sweep through the village. Yan Qing joins hands with partners A Lan and Xiao Zhou to investigate the mining area and find the root cause of the damage to the spiritual veins. The whole village unites to deploy the Four Images Vein-Sealing Array. Yan Qing takes over his master's divine brush, suppresses the ink nightmare with the power of brush and ink, and repairs the spiritual veins. He Jin repents completely, everyone guards their mountain and river home, and Yan Qing also officially takes on the mission of the Mountain Guard.