Top‑notch assassin Mara is reborn in the body of a bullied college student via an alien parasitic core after her base is destroyed. She trains hard, develops inhibitors, protects her kind‑hearted younger brother and family, and fights campus evil, only to get tangled in the conspiracy of the secret Helix Covenant. Lured by the mastermind who uses her brother as bait, Mara teams up with allies, uses herself as bait, takes down the criminal organization in a global live broadcast, breaks free from labels, and embarks on a brand‑new life chasing justice.