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A meteorite crashes into the earth, heralding the invasion of alien civilization. People all over the world are suddenly awakening to supernatural powers. Zhang Jin, who has been practicing martial arts since childhood, met Dr. Wu by chance. Dr. Wu told about his adventures with aliens. Dr. Wu firmly believed that alien civilization would invade Blue Star. From then on, Zhang Jin had another identity - Iron Soldier. Enhanced humans, mechanical life, alien creatures... More and more enemies began to appear on Blue Star.

Xu Jinyang died in a car accident while saving a little girl, but was reborn as a defected imperial knight. It seems that fate is playing tricks on him. The rules of this world are dark, and prejudice, plunder, bullying, and disease are often filled with the whole world. Xu Jinyang's heart was greatly touched, so he decided to challenge the darkness in this world with the power of the "son of the dragon".