When Nals, a royal descendant of the Moon People, flees to Earth, the lives of Liu Xuan and An Xiaotian are changed forever. Liu Xuan chooses to accept Nals's soul and becomes the first member of the Defenders, the Blue-Faced Man. After being injured in battle, An Xiaotian merges with the Fierce Eagle armor and becomes the Fierce Eagle Hero. Nals tells them the terrifying secret of the Godslayers, and the two begin urgently assembling the Defender Alliance, seeking out China's other heroes with extraordinary abilities to fight off the Godslayers' invasion. Besides the two of them, there is Nightmare, China's greatest sniper; Divine Fist, whose arms possess immeasurable strength; even Sun Wukong, who has cultivated for a thousand years, and more. A war that will decide humanity's fate is about to begin.