Iron Lung

A convict named Simon (Markiplier) is sent to pilot a submarine nicknamed the "Iron Lung" through an ocean of blood on a desolate moon after an apocalyptic event known as the "Quiet Rapture". He must capture images using a crude camera and receives limited communication from the crew on the surface. As he navigates the treacherous underwater terrain, Simon begins to hallucinate and confronts a mysterious sea creature. The submarine's mission is to collect resources humanity desperately needs to survive, but the journey takes a dark turn as Simon uncovers disturbing secrets about his past and the true nature of the Quiet Rapture.