Lin Ruien transmigrates into a world much like Armor Hero, where people awaken their own armor at a certain age. During his awakening, the two armors inside him clash, causing the testing device to misjudge his bloodline as F-rank and making him the laughingstock of the entire city. But when monsters attack the awakening site, Lin Ruien suddenly summons the A-rank bloodline Xingtian Armor. Without relying on any of its signature moves, he drives off three monsters with a set of street-fighting punches. After the incident, his grandfather suddenly tells him that his father's disappearance is connected to the Alliance. And so, Lin Ruien sets off to find his father.
