During the war between Wei and Shu, the Shu defeated the Wei using the crossbows they made. In order to attain this powerful weapon, the Wei sent numerous spies to steal and infiltrate the Shu kingdom. Chen Gong and Xun Xu are Shu spies who have infiltrated the Wei kingdom for many years. After learning about Wei’s plan, they decided to work separately to stop it.
Chen Gong continued to stay in the Wei kingdom, while Xun Xu went back to the Shu kingdom to investigate. In the midst of the investigation, Xun Xu finds the thief of the crossbows – Mei Chong. He also discovers a highly skilled spy named Zhu Long, who is ambushed in Shu kingdom, who is waiting for the opportunity to initiate the Qing Ping plan. Xun Xu devised a scheme to hook Mei Chong, using it as an opportunity to destroy the spy network in the Shu kingdom.
