The Deep Dark

Astro-engineer Cam Richardson returns to the planet Hephaestus to repair both the mining base's robots and his relationship with his estranged wife. But when the base comes under assault, he gets stranded in a cave system deep below the surface. The only thing on his mind now is how to keep himself and his wife alive, and which is more likely to kill them first - the terrorists in the base, or the unknown terrors in the deep dark.