The State of Qin is back at it one year after their grueling battle with Zhao, pursuing King Ying Zheng's vision of conquering and unifying China. Their sights are now set on Wei, a small yet strategically located state on their path to domination. Xin leads the rapidly growing Fei Xin Unit, comprised of three hundred men, as they strive for greatness in honor of their fallen comrades from previous battles. However, Xin faces fierce competition from other young commanders with higher social status during the initial skirmishes leading up to Qin's invasion of Wei. Meanwhile, the royal palace in Qin is in chaos as factions plot against Ying Zheng's reign. Despite facing challenges both at home and abroad, both Zheng and Xin are determined to make history by creating a unified China amidst endless war.