In a post-apocalyptic future where an event known as "The Quiet Rapture" caused all known stars and habitable planets in the universe to disappear, a convict is sent to search an ocean of blood discovered on a desolate moon, using a small submarine nicknamed the "Iron Lung".

Mark Fischbachas Simon
Caroline Kaplanas Ava
Troy Bakeras David
Elsie Lovelockas SM-8 Research Lead / The Speaker (voice)
Elle LaMontas SM-8 Research Assistant / The Whisper (voice)
Mick Laueras The Guy Who Told You to Cross the Wires (voice)
Dave Pettittas The Father
Holt Boggsas Eden Soldier
Isaac McKeeas Young Simon
Philip Roy