Blue Star enters the Star Core Era, everyone awakens a star core from birth, with grades ranging from E to SSS, where talent determines destiny. For three years, Lin Chen was judged as a core-less good-for-nothing, enduring mockery from the whole school; no one knew that what slept within his body was the remnant of the first dead star from the dawn of the universe—the Zero-Grade Star Core. Not belonging to Blue Star's established grades, its ability is devouring and collapsing, capable of devouring abilities, breaking rules, and defying all laws. Achieving godhood in exam written tests, crushing pride on the arena, challenged by geniuses across the state, and fought over by the two major academies of the Federation. Leaving Jiangcheng, heading to the orbital interstellar base, fighting geniuses of all races, and facing the extraterrestrial species eyeing Blue Star. Ordinary stars have tiers, but zero-grade has no boundaries; the dead star awakens to devour the star sea!