In 223 BC, on the eve of Qin's destruction of Chu. Bai Ying hid in the market to avoid disaster and lived a life of fear. After a military disaster, he was drafted as a young man into a "cannon fodder camp" destined to be abandoned. The first battle was defeated. On the thin line between life and death, the system awakened. He found that every time he killed an enemy, his strength, speed, and even his understanding of the art of war would instantly increase. From the initial fear and resistance to the gradual habit of killing, the beast in him was awakened. He relied on this to survive in a desperate situation, and led the cannon fodder battalion to achieve amazing results. He gradually entered the vision of the famous Qin general Wang Jian. Finally, at the key point of the battle to destroy Chu, he tore apart Xiang Yan's army as a surprise soldier and became famous in one battle. After the war, his identity was discovered by Ying Zheng. Instead of convicting him, he regarded him as the sharpest knife and sent him to where the embers of the Six Kingdoms were strongest. And Bai Ying finally understood that the end point of the system was not to kill people, but to stop killing with killing and end this troubled world.