After debuting some sneak peek videos, DreamWorks Pictures has finally released the first full trailer for "I Am Number Four" via Yahoo! Movies. It follows an extraordinary boy who looks like just a normal guy before he learns about his special abilities.
Alex Pettyfer plays John Smith aka Number Four, one of alien teens who is sent from another planet to Earth to hide from ruthless enemies sent to destroy him. He is changing his identity, assimilating to high school on Earth, and moving from town to town with his guardian Henri.
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