In the next 2150 years, human colonization of the interstellar space will encounter an invasion by the alien "Shadow Clan", and the federal army will be retreating steadily. The protagonist Lin Xiuyuan, as a mecha game tester, accidentally activated the "Mecha Core Resonance" talent, which allows him to sense the performance of mechas and transform and upgrade them. He started by repairing abandoned mechas, gradually participated in actual combat, slapped colleagues and dignitaries who despised him, saved the invaded planet, exposed the conspiracy within the Federation and the Shadow Clan, and finally became the God of War of the Galactic Alliance, leading mankind to defeat the Shadow Clan.
