The novel tells the story of the 372nd year when human civilization has entered the interstellar era. The Federation rules the colonial star field spanning 12 galaxies, and the high-tech civilization and science fiction technology are deeply integrated. Ten years ago, the Federation's strongest mecha formation "Daybreak" mysteriously disappeared during the battle against the alien Zerg. Captain Chen Feng broke out with key evidence, but was framed as a "traitor" and his family was also included in the monitoring list. Today, Chen An, the son of Chen Feng, is struggling to survive in the slums of the seventh district of the Federation as a low-level F-class warrior. However, he awakens to the mysterious "Star Skeleton System" in an accident. This system is deeply related to the Dawn Mecha left behind by his father, and he begins to gradually uncover the truth.
