When a private satellite encounters an unidentified source of heat in Antarctica and it is found to be a pyramid buried deep underground , a search team 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 .

In the Antarctic, after an expedition with Dr. Davis McClaren (Bruce Greenwood), the sled dog trainer Jerry Shepherd (Paul Walker) has to leave the polar base with his colleagues due to the proximity of a heavy snow storm. He ties his dogs to be rescued after, but the mission is called-off and the dogs are left alone at their own fortune. For six months, Jerry tries to find a sponsor for a rescue mission while his dogs fight for survival.

At New York’s Central Park Zoo, a lion (Stiller), a zebra (Rock), a giraffe (Schwimmer), and a hippo (Smith) are best friends and stars of the show. But when one of the animals goes missing from their cage, the other three break free to look for him, only to find themselves reunited … on a ship en route to Africa. When their vessel is hijacked, however, the friends, who have all been raised in captivity, learn first-hand what life can be like in the wild.

Two people from two worlds. FBI Agent Fox Mulder, a believer. FBI Agent Dana Scully, a Skeptic. Together they must solve the mysteries such as who, or what destroyed a Federal Building in Dallas, what killed 4 firemen and a child supposedly killed in the blast and more, but these mysteries were not placed by some insane terrorist, these were placed by our very own Government.