Zhang Xiaoyi, a bad guy from Chang'an, accidentally got involved in the secret fight between the prince and An Lushan because of his pursuit of a copper coin counterfeiting case. Relying on his experience and market wisdom, he was promoted from a street gangster to a lieutenant in the Jinwu Guard. When the Anshi Rebellion broke out, he led the dead soldiers to protect Emperor Xuanzong of the Tang Dynasty as he fled to Shu. On the way, he discovered that Concubine Yang was not dead, but was secretly sent to Japan. The financial backer behind the counterfeiting case was An Lushan, who was preparing to rebel.
