In the future, a battlefield of national destiny appears, where countries summon heroic spirits from their own histories and myths to determine their national fate. Due to a break in its historical record, Great Xia suffers nine consecutive defeats and stands on the brink of national destruction. Li Qian, a time traveler with complete memories of Chinese history, withstands ridicule and earns the trust of Empress Wei Hanzhao. His first summoning is Guan Yu, and he goes on to crush Miyamoto, Toyotomi Hideyoshi, and Oda Nobunaga, summoned by Watanabe of the Rising Sun Nation, turning the tide of national destiny. Li Qian is appointed an Imperial Historian, livestreaming historical accounts to restore the lost chapters of history. This draws Howard into forming an allied army with the Rising Sun Nation and the Brahma Nation, while the traitorous Prince of Jing'an secretly conspires with foreign enemies and causes chaos. Li Qian successively summons Jiang Ziya, Zhang Liang, and Sun Wukong to defeat the enemies, while Zhuge Liang deploys the Eight Formation Diagram to annihilate the allied forces. Just then, extraterrestrial demons invade through a rift in the battlefield, and Takahashi Rin sacrifices national destiny to tear open the seal.