: Only Ziyu and his wife, Xiaoai, know the truth. While Jingzhou plays the role of the commander to fool the unpredictable King of Pei, he begins to struggle with his own identity and his growing feelings for Xiaoai.

: As the King of Pei suspects betrayal and moves to maintain a fragile peace, Ziyu and his "shadow" execute a complex plan involving unconventional weaponry—such as weaponized metal umbrellas—to reclaim the city during a massive rainstorm.

: The lines between master and puppet blur as the mission reaches its bloody conclusion, leading to a series of betrayals where the "shadow" must choose between remaining a weapon or seizing his own destiny.

: Ziyu’s ultimate goal is to retake the strategic city of Jing, which was lost to a rival kingdom years prior. He promises Jingzhou freedom and a reunion with his mother if the mission succeeds.

In the 2018 film , set during China’s Three Kingdoms era, a brilliant but ailing military commander named Ziyu uses a doppelgänger, or "shadow," to maintain his influence. Having been severely wounded in a past duel and hiding in a secret chamber, Ziyu trains a commoner named Jingzhou—who bears an uncanny resemblance to him—to act as his proxy in the royal court and on the battlefield. The story follows these core threads: