Quick Review: I Am Number Four

The premise of "I Am Number Four" is this: the planet Lorien was destroyed by alien invaders called the Mogadorians, but nine children (along with guardians) were able to escape to Earth. These kids have special powers and at some point in the future will be able to defeat their enemy, so the Mogadorians are hunting them down. For reasons that aren't clear they have to be killed in order, and at the beginning of the film we see Number Three meet his maker. Hence the title, and the teenager in question (Alex Pettyfer) is in hiding with his guardian (Timothy Olyphant) in Ohio. They had to leave Florida because his powers began kicking in. With faked ID, etc. he enrolls in high school and falls for a girl (Dianna Agron from "Glee"), deals with a bully -- her ex-boyfriend -- and befriends a fellow student whose father disappeared years earlier, and things happen that draw the attention of the Mogadorians. So it's sort of like "Twilight" with a Superman-like twist (alien kid's home planet destroyed, he survives by being sent to Earth, develops super-powers) and a girl from "Glee" who isn't much of an actress. Not horrible but not in any way special. My grade: C-minus.