From the introduction:
Welcome to feudal China. For four hundred years, the Han dynasty has ruled the land. Underneath the Han, China knew an age of peace and prosperity. However, like all things, it must one day end. The court eunuchs have usurped imperial authority, not only deceiving the emperor but promoting corrupt officials and persecuting virtuous ones. The people suffered greatly underneath the eunuch's corruption. But it was Zhang Jiao, a Taoist monk, who hammered in the first nail into the Han's coffin when he formed the Yellow Turban Army. With many dissatisfied peasants flocking to his banner, Zhang Jiao led the Yellow Turbans in revolt against the Han Emperor. Heroes and villains alike took up arms to either quell the chaos or prosper from it. No greater heroes arose during this time than Liu Bei, Cao Cao, and Sun Quan. The leaders of Shu-Han, Cao Wei, and Sun Wu respectively.