to form an alliance between his lord and Sun Quan against Cao Cao. Sun Quan was initially in the midst of a dilemma of whether to surrender or fight back, but his decision to resist Cao Cao hardens after Zhuge Liang's clever persuasion and a subsequent tiger hunt with his viceroy Zhou Yu and his sister Sun Shangxiang. Meanwhile, Cai Mao and Zhang Yun, two naval commanders from Jing Province, pledge allegiance to Cao Cao, who puts them in command of his navy. After the hasty formation of the Sun–Liu alliance, the forces of Liu Bei and Sun Quan call for a meeting to formulate a plan to counter Cao Cao's army, which is rapidly advancing towards their base at Red Cliff from both land and water. The battle begins with Sun Shangxiang leading some riders to lure Cao Cao's vanguard force into the allies' Bagua Formation. The vanguard force is defeated by the allies but Cao Cao shows no disappointment and proceeds to lead his main army to the riverbank directly opposite Red Cliff, where they make camp. While the allies throw a banquet to celebrate their victory, Zhuge Liang conceives a plan to send Sun Shangxiang on an espionage mission to Cao Cao's camp. They maintain contact by sending messages via a pigeon. The film ends with Zhou Yu lighting his miniaturised battleships on a map based on the battle formation. Part II Sun Shangxiang has infiltrated Cao Cao's camp and is secretly noting its details and sending them via a pigeon to Zhuge Liang. Meanwhile, Cao Cao's army is seized with a plague of typhoid fever that kills a number of his troops. Cao Cao orders the corpses to be sent on floating rafts to the allies' camp, in the hope of spreading the plague to his enemies. The allied army's morale is affected when some unsuspecting soldiers let the plague in. Eventually, a disheartened Liu Bei leaves with his forces while Zhuge Liang stays behind to assist Sun Quan. Cao Cao is overjoyed when he hears that the alliance has collapsed. At the same time, Cai Mao and Zhang Yun propose a new tactic of interlocking the battleships with iron beams to minimise rocking when sailing on the river and reduce the chances of the troops falling seasick. Zhou Yu and Zhuge Liang make plans to eliminate Cai Mao and Zhang Yun and produce 100,000 arrows