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ilm is set in the future. Humans on spaceship named "Tantra" are exploring the unknown part of the Universe. The spaceship gets trapped by the mysterious Iron Star. The Iron Star's powerful force of gravity is to hold the spaceship for 20 years. The humans are facing a very tough survival challenge, being surrounded by the invisible predators. The predators can eat human flesh right through heavy spacesuits, and some crew-members disappear. Only the light from "Tantra" can scare the predators away.

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