Zhao Tiezhu was a soldier in the northern frontier town of Daliang. He was a loyal, brave and upright man. Because Wang Chongyi, the Secretary of the Ministry of War, deducted military pay, the frontier army had no food and pay, their armor was rotten, and the soldiers were starved of food. He was killed and wounded in the battle with Beidi. In a bloody battle, Zhao Tiezhu was seriously injured. When he was about to die, he awakened the "Iron-Blooded War System". Killing enemies can earn military merits, which can be exchanged for magic weapons, martial arts, and elite soldier training methods. He climbed up from the pool of blood and used the system to turn the tide of the battle. After that, he independently explored enemy camps, raided grain roads, defeated many with a small number, and repeatedly performed extraordinary feats. He was promoted from captain and lieutenant to commander-in-chief of an army. However, he was unyielding and cut off people's financial opportunities, which led to the Minister of War's plan to rise up and down secretly, and kill people with borrowed swords. While Zhao Tiezhu fought bloody battles in Beidi, he collected evidence of corruption with the help of Qingliu Censor. When the evidence was complete, he brought his troops back to Beijing with the power of victory, confronted him in court, and exposed the ten crimes of Shangshu, including collaborating with the enemy and subtracting wages. Finally, he brought the traitor to justice and reorganized the broken army. He grew from a pawn to Optimus Prime, forging the road to resurgence with his blood and iron. However, the world is not at peace, and the Great Yan Empire from the western border comes to the border with advanced firearms. The remnants of Beidi come back, and the system warns the island countries in the East China Sea that they are pregnant with trouble. Zhao Tiezhu took command of the Western Expedition and sent his troops across the ocean. The iron-blooded journey has only new battlefields and no final chapter.