t Andromeda is offered as a sacrifice or he will unleash the Kraken against Argos. A desperate King Cepheus asks demi-god Perseus to find a way to defeat the Kraken. Perseus accepts the challenge because Hades was responsible for his family's death. He discovers that the way to kill the Kraken lies with getting the head of the gorgon Medusa.

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eam comprising of top-of-the-line archaeologists and engineers is sent to Antarctica to find out more . Once there , the team comes across signs which indicate that the place is inhabited by an unknown alien species . It is not long before the aliens begin to hunt the team members . At the same time , a trio of coming-of-age Predators have arrived to collect the skulls of the aliens as trophies , and the humans are caught between a deadly battle between the two warring species .

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is son, Sam, are hunting in the forest and witness the crash, but they are chased and killed by the Alien. Meanwhile another Predator lands on the spot seeking out the Alien and destroys evidence of their presence on Earth. The dwellers of the town find themselves in the middle of a battlefield between the two deadly extraterrestrial creatures, and the small group of survivors splits between the leadership of Sheriff Eddie Morales and the bad-boy Dallas Howard. Both have different opinions about the best means to escape from the beings.

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