In the ninth year of the Daye era, Li Yu arrives at the Liyang wharf and becomes a member of the rebel army under Yang Xuangan. In this era, the world is upside down, the people are suffering, rebels are everywhere, and the people are in chaos. In this era, aristocratic families control the world, and those from humble backgrounds are desperate. In this era, Li Yuan, Li Jiancheng, and Li Shimin, father and son, are eyeing the Sui Dynasty; Li Mi, Wang Shichong, and Dou Jiande are about to wreak havoc on the world. In this era, the cavalry from the grasslands are constantly invading from the north, eyeing the Central Plains, and Goguryeo has killed countless soldiers from the Central Plains. This is an era of survival, an era of heroes.