Alex Pettyfer reassures on-screen pal Callan McAuliffe in this new still from I Am Number Four.

The flick, which also stars blond beauties Dianna Agron and Teresa Palmer, is a story about a group of nine earthbound aliens who escaped their planet just before it was annihilated by a rival species.

Hiding out on Earth, disguised as a human teenager in high school, the title character discovers that he is being hunted by the enemy that destroyed his planet.

25+ NEW pics inside…