
Iron Lung is a 2026 American independent science fiction horror film written, edited, and directed by Mark "Markiplier" Fischbach. It is based on the 2022 video game by David Szymanski. It stars Markiplier, Caroline Kaplan, Troy Baker, Elsie Lovelock, Elle LaMont, Mick Lauer, Seán McLoughlin (Jacksepticeye), Isaac McKee and Alanah Pearce. The plot follows a convict named Simon (Markiplier) who is forced to pilot a submarine through an ocean of blood on a desolate moon following an apocalyptic event known as the "Quiet Rapture" that caused all the stars and most planets along with their human inhabitants to disappear without warning.
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".
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