Nia Campbell hides her overwhelming space‑concept magic and enrolls at Aurora International Magic Academy with the lowest C‑rank, aiming to uncover the truth behind her sister Maya’s disappearance four years ago. In the run‑down Class C basement dorm, she meets a group of misfit students who are all suppressed and unfairly graded. They gradually form an underdog alliance, exposing the academy’s dark secret: the powerful council runs a brutal magic‑extraction system that drains genius mages’ power for immortality schemes. Through illusion‑domain trials, arena tournaments and dangerous infiltration, Nia and her ragtag companions defeat corrupt officials and traitor elders, shut down the sinister extraction core, abolish the cruel ranking system, and bring long‑overdue justice to the wronged victims.
