Lin Jue, once the top sharp sword in the Delta, was framed during a top-secret mission and charged with treason and was thrown into the "Iron Cage", the world's toughest black prison. The most vicious war criminals and mercenaries were imprisoned here, and the rule was that the weak should eat the strong. However, he had been dormant for three years in a desperate situation, honing his combat skills to "maximum level".
