The player assumes the role of Jacob Lee, a victim of fate who is sent to Black Iron Prison, a maximum-security prison situated on Jupiter's moon, Callisto, in this narrative-driven, third-person survival horror game set 300 years in the future. The prison is plunged into chaos as prisoners start to change into hideous creatures. In order to survive, Jacob has to fight his way out of Black Iron Prison and discover the sinister and unsettling secrets that lie beneath Callisto's surface. In order to outrun the escalating threat and escape the horrors of Jupiter's Dead Moon, Jacob will need to modify his strategy to fight the quickly changing creatures while scavenging to acquire new weapons, equipment, and abilities. He will do this by combining a special kind of close-quarters combat with shooting.