He tried to save someone out of kindness, but got dragged into their trouble and lost his life. He transmigrates and takes over the body of Xiang Kang, Xiang Yu's kinsman. He knows Xiang Yu is hopeless, but has no idea what ultimately became of the Xiang family in history. To stay alive, to protect his sworn brothers, and for the woman he loves, Xiang Kang can only strive to rise above his circumstances.
The magnanimous Han Dynasty is indeed powerful, but Xiang Kang believes he can make it even stronger, planting the Han people's banner across lands larger and more far-reaching.
So, Liu Bang, I'm sorry, but I, Xiang Kang, am determined to fight you for the empire.