Lu Chen, a freshman in high school, talks little, is ruthless, doesn't cause trouble but is never afraid of it. Fang Ran is a fast-talking, hot-blooded, martial arts school graduate, and is always looking for a fight. One is like iron and the other is like fire.
From standing up in the cafeteria to fighting to the death in the underground boxing gym, from being surrounded by gangsters to joining forces to overthrow the entire gray circle of influence - they are rivals, comrades-in-arms, and the only ones willing to hand over each other's backs.
When the poisonous snake crawling out of the quagmire showed its fangs, Iron and Fire finally understood: the real strength is not the hardest fist, but the courage to hold the bottom line.
