"Under heaven, there are all rusty lies."
In a world after the collapse of civilization, former GRE agent Liam Kane has a fatal gift flowing in his body - the "beast" gene that can give him extraordinary power, but is always trying to devour his sanity. He became a messenger traveling through the ruins in exchange for an inhibitor that could barely maintain his humanity.
A glimmer of hope leads him to the fabled refuge: Beaver Valley Research City. It is said that it is ruled by the genius and benevolent Baron Thorne, has clean water, electricity and order, and is the last "paradise" in the apocalypse.
However, when Liam arrived after all the hardships, he discovered a completely different truth. Underneath the glamorous core area is a rusty bottom layer that relies on anti-venom and violence to enslave everyone. The Baron's "heaven" is not a place of redemption, but a gorgeous cage built on huge secrets.
To find his missing sister and uncover the truth about Project Prometheus, Liam must delve into the heart of this rusted paradise. He wanders between the walls and the abyss, allying with underground rebels, the crazy "crow doctor" and his own animal instincts.
In this world where the light has long faded, the only way out is to climb up that rusty paradise, and then - overthrow it completely.