Lin Feng and Su Muxue were originally "marginal people" in Jianglin City - he was a former martial arts apprentice with blocked spiritual veins. He made a living by moving scraps in the spiritual energy factory and could not even perform basic spiritual vein techniques; she was an ancient book restorer who was said to have "withered spiritual roots". In a city where evil spirits were raging, she could only survive under the protection of the Lingwu Alliance.
Until the purple evil mist enveloped the whole city, the A-level evil spirit "Bone Corroding Shadow" broke through the protective formation. When he was about to die, Lin Feng's silent "Yangyang Spiritual Vein" suddenly awakened and smashed the evil spirit's spiritual core with a punch; Su Muxue held the ancestral "Han Yue Jade Pendant", awakened the ice soul spiritual vein, and froze the spreading evil mist with one palm.
The former "abandoned son" counterattacked overnight, only to discover that there was a bigger conspiracy hidden behind the evil mist: there was an altar to evil spirits buried underground in Jianglin City, and even the top leaders of the Lingwu Alliance were secretly feeding evil spirits with human spiritual veins! "I will burn evil spirits with my flaming sun, and guard Jiangcheng with your ice soul!" The two of them embarked on the road to protect the city side by side, from killing souls on the streets to going deep into the altar, tearing apart the darkness with the power of their spiritual veins, and finally became the "Two Spiritual Guards" known to everyone in Jianglin City!