Months after the events of INFRA, Stalburg is being battered by severe storms and flooding. Mark is asked to inspect storm damage in a cluster of houses on Raft Isle — a routine-sounding job with a request that does not feel quite right. It quickly stops being routine. Grab your flashlight, camera, and hardhat, and prepare to fight your way through a flooded, collapsing underground network of tunnels and maintenance areas while uncovering the truth behind what has been happening to the city's water supply.