Convict imprisoned for destroying a space station, forced to pilot the SM-13 submarine 'Iron Lung'. Navigates via a sealed porthole using a crude X-ray camera. Collects samples from the ocean floor, suffers physical mutations and hallucinations from exposure to a blood-like substance, and ultimately sacrifices himself when a seed medallion transforms into a tree that destroys the monster and his vessel.
Simon's mind fractures under pressure, blurring internal and external threats.
Ava acts as the surface commander directing Simon's underwater operations.
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