DreamWorks have released the first full trailer for D.J. Caruso’s I Am Number Four. The film stars Alex Pettyfer, Timothy Olyphant, Teresa Palmer, Dianna Agron, Kevin Durand, and Callan McAuliffe. The plot centers on nine infant aliens, who closely resemble humans, flee their home planet, Lorien, to hide on Earth. An invading species, the Mogadorians, have destroyed their planet, and follow them to Earth to hunt them down. Each of the nine aliens is given a guardian and will develop superhuman powers as they become adults. They are each assigned a number.The film hits theaters 02.18.11.