Lin Che, who was born with incomplete spiritual roots, was judged as a "waste" in the world of immortality and was expelled by the Xuantian Sect. However, he accidentally picked up a mysterious bronze "fire core" in Falling Star Valley - this became his key to the door of the mecha world.
He traveled to the "Abandoned Mechanical City" that was despised by immortal cultivators. In the roaring mechanical workshop, he joined forces with the hot-tempered mechanic Su Mu. Based on the basic mechanics knowledge of the immortal cultivator world and integrating interstellar debris technology, he created the first exclusive mecha "Stardust". From her first battle with the Bone-Eroding Zerg and her acquaintance with Xia Wanxing, a smart and dashing mecha pilot, to following the mysterious Chu Qingyao to the low-level planet Blue Star to fight against the Xuantian Sect who trampled their homeland in order to plunder the relics of a super-level civilization, Lin Che used steel mechas to break the prejudice of "cultivating immortals first" time and time again.
In the story, there are both the shocking showdown in which a mecha carries an ion cannon and tears apart a battleship, and the bond between beautiful partners with different personalities fighting side by side; from fighting in the ruins of a low-level planet to pursuing the truth behind the disappearance of super civilizations, Lin Che has always believed that "what is cultivating immortals? Mechas are a man's romance." With the core of fire as his guide and his iron will as his soul, he gradually grew from a cultivator and an abandoned son to a mecha god emperor who could protect his homeland and travel across the interstellar world. In the universe where aura and technology collided, he embarked on a passionate journey unique to the mecha warrior.