In the post-apocalyptic wasteland, outside Vault 73, the infected are dying and mutating. Leo, a lowly repairman, secretly refines pure anti-radiation serum, saving over a hundred lives at cost price: one vial for one compressed biscuit.A year later, the refugees he pulled back from the brink of death turn on him, bought off by the warlord Victor. They report him for "peddling shoddy poison and squeezing people for their lifesaving rations." Shackled, he is dragged onto the public trial stage, where the crowd screams, "Hang the fraud!"On the stage, Leo produces his ledgers, clinical data, and a certification from the Inner City's chief scholar.His serum is in fact the priceless "Eden Code," and a single vial can buy a life. The ringleader of the accusers is none other than an ingrate who is alive today only because of that serum.Under the weight of the evidence, the crowd shows its true colors: the savior is wronged, the warlord's scheme is laid bare, and the fleet of the sky-borne Eden City descends. When Leo smashes the last vial and turns to board the floating fortress, Vault 73 realizes too late that with their own hands, they have driven their only god out of hell.
