Li Mi, Xiang Yu's little fanboy, accidentally discovers Wu Zui Horse Shoe and travels back to the Chu and Han Dynasties. He conspires with Xiang Yu on major events and vows to change history and get rid of regrets. In the process, there are disagreements, there is redemption, and the brotherhood is complete. Even if it cannot be changed, I will still stand behind you. If Xiang Yu does not gain his strength, then I will be the emperor of this world for my brother.