Cao Cao stands as the central figure in the anime film, holding the powerful position of Chancellor within the Han Dynasty government. He exercises significant control over the weakened emperor and dominates the imperial court. His political supremacy causes deep concern for Emperor Xian, who fears Cao Cao's ultimate ambition is to seize power completely.

Believing Cao Cao intends to overthrow the Han Dynasty, Emperor Xian secretly commands Liu Bei and his sworn brothers, Guan Yu and Zhang Fei, to assassinate him. Cao Cao uncovers this plot against his life. Upon discovering the scheme, he launches a counter-strategy designed to sow discord and create conflict between Liu Bei and his loyal brothers. This calculated maneuver specifically aims to fracture their formidable alliance by exploiting potential rifts in their bond.

The narrative further portrays Cao Cao actively pursuing broader military dominance across China. His formidable forces represent a major obstacle to the goals of Liu Bei and the southern kingdom of Wu. Within the film, his strategic focus remains on consolidating power and neutralizing any rivals who challenge his authority or his vision for the realm.