A stranger claiming to be from another planet mystifies psychiatrists and scientists.

Beck is anxious to retire from his bounty hunter work, but his boss, Walker, has one more "retrieval" job for him. He sends Beck into the Brazilian rainforest to bring back his wayward son, Travis. Travis is there looking for a gold statue, which he could sell for millions if he finds it. The powerful Hatcher owns the area's huge mine, and feels that anything found in the area is his property. He refuses to let Beck take Travis back to the U.S. until...

Born into a world filled with prejudice are children who possess extraordinary and dangerous powers - the result of unique genetic mutations. But under the tutelage of Professor Xavier, these and other outcasts learn to harness their powers for the good of mankind. Now they must protect those who fear them as the nefarious Magneto, who believes humans and mutants can never co-exist, unveils his sinister plan for the future.

Following a shocking attack on the President, the X-men must stand united with their deadliest enemies to combat a menace that threatens every mutant on the planet, and possibly all of mankind.