Cao Cao (played by Bao Guoan) wants to establish an heir, and the third son Cao Zhi is very talented and full of economics. Yang Xiu also assisted Cao Zhi in military affairs, so that both the officials of the Wei State and the people of the Wei State opposed Cao Zhi as the heir. The eldest son Cao Pi, who wanted to seize the position of heir, has been paying attention to Cao Zhi's movements. Cao Pi (played by Yang Junyong), who has gradually fallen out of favor, invites Jia Xu to discuss. Jia Xu knows that Yang Xiu is behind Cao Zhi's plan and wants to get rid of Yang Xiu. Cao Pi also designed to get Cao Zhi drunk, which delayed Cao Zhi's military situation. Cao Cao was furious and finally made Cao Pi his heir. The battle for Hanzhong started between Cao Cao and Liu Bei (played by Sun Yanjun), and Zhang Fei (played by Li Jingfei) led his troops to attack Hanzhong.