In the aftermath of a brutal conflict with Zhao, the Qin state refocuses on King Ying Zheng's dream of uniting China by conquering its rival states. As they aim to take down Wei, Xin, now a commander in the Fei Xin Unit, strives for glory to honor his fallen comrades. Surrounded by ambitious young leaders and facing internal turmoil, Xin and Zheng must navigate the challenges of war and politics to leave their mark on history with a unified China.