When the eternally silent world of mountains and seas reintegrated into the main world with the bizarre and bizarre beasts in the "Book of Mountains and Seas", a sudden external energy pollution turned this ancient territory into purgatory. Polluted creatures tore apart the town, and the ancient might fell into a deep sleep due to the fusion of realms. Zhang Binfan, the son of Qingyang City's martial arts master, after witnessing his parents' tragic deaths from polluted dogs, awakened to the profession of "shield bearer" in a desperate situation - a cowardly choice that he instinctively resisted and considered "hiding behind the shield".
The "system" that suddenly appeared in his mind gave him a soul-nurturing bottle, which locked the broken souls of his parents and opened an alternative path for him to protect him by integrating martial arts and supernatural powers. He abandoned his shield and relied on his system-strengthened physique and the "Fire Sun Fist" taught by his father to hit the flesh. However, on the way to escort his adopted sister Zhang Nian'an to the Demon City Academy, he met Ouyang Yifeng, who had awakened both ice and fire but had a split personality, and formed a team with Ruan Ming, a reclusive swordsman who rebelled against his family.
