In the late Eastern Han Dynasty, the young emperor of the Han clan struggled to handle the situation. In the court, Cao Cao (played by Zhang Fengyi) acted arbitrarily, seizing power by using the emperor to command the lords. The minister Kong Rong (played by Wang Qingxiang) swore to bravely advise him, but ended up being sacrificed to Cao's troops. It turned out that Cao Cao was determined to eliminate Liu Bei (played by You Yong), Sun Quan (played by Zhang Zhen), and other rebels in the south, aiming to unify the world. After the battle at Changban Slope, with the assistance of military strategist Zhuge Liang (played by Takeshi Kaneshiro), Liu Bei led his sworn brothers Guan Yu, Zhang Fei (played by Zang Jinsheng), Zhao Yun (played by Hu Jun), and other refugees, fighting while retreating, ultimately seeking help from Sun Quan in Jiangdong. However, Sun Quan was also hesitating about resisting Cao. But the great general Zhou Yu (played by Tony Leung) and his sister Sun Shangxiang both strongly supported the campaign. With a large army approaching, the alliance between Sun and Liu began to take shape. Zhuge Liang observed Zhou Yu's disciplined command of the army and was pleased with his leading general Gan Xing (played by Nakamura Shido), who set an example by being at the forefront. At this moment, news suddenly came that there was a serious shortage of crossbows in the army. Ignoring Lu Su's (played by Hou Yong) kind advice, Kong Ming willingly set a military order, seeking to acquire crossbows...