What Is 'I Am Number Four' About?
Based on a bestselling young-adult novel by the same title, 'I Am Number Four' follows a teenage humanoid alien (played by Alex Pettyfer) that hails from the planet Lorien. He goes by John Smith (or Dan Jones, or a bunch of other nondescript names, depending where he moves) and lives with his guardian, Henri (Timothy Olyphant).

John was one of only nine young aliens (plus their keepers) who escaped Lorien before it was destroyed. They were each given a number and a special protective charm that meant they could only be killed in number order; when one is killed, the survivors receive a magical scar on their legs. When the third scar appears on John's leg, he knows he's next to be tracked down by the Mogadorians, the aliens who wiped out life on Lorien and want to do the same on Earth. John and Henri have to outrun the Mogadorians while attempting to remain under the radar in their new adopted small town of Paradise, Ohio.
What Are People Talking About?
Most of the buzz has to do with the sci-fi thriller's ridiculously attractive leads rather than the movie itself. Alex Pettyfer and co-star Dianna Agron (best known as the gorgeous cheerleader Quinn on 'Glee') met on the set and have been dating since last summer. According to some celebrity mags, the golden-haired couple may even be secretly engaged, so they've been regulars in the Hollywood-couple gossip circuit nonstop for more than six months.

Who's This Alex Pettyfer?
Remember his name, because he's on his way to becoming more than the latest teen dream. The British model-turned-actor is currently in two Young Adult adaptations, 'I Am Number Four' and the upcoming 'Beauty and the Beast' reboot 'Beastly' opposite Vanessa Hudgens. If those two roles don't help him graduate to A-list status, the 20-year-old has been offered leading roles in at least two more supernatural page-to-screen flicks: 'The Mortal Instruments' saga, based on Cassandra Clare's romantic, 'Twilight'-esque books; and 'The Last Apprentice,' based on Joseph Delaney's 18th-century fantasy series. Rumor even has it he's met with Gary Ross about playing Peeta in 'The Hunger Games.' Just call Pettyfer the YA Kid.

Is This a Series?
Yes. The books are called 'The Lorien Legacies' (by the fictional "Pittacus Lore," a Lorien elder), but so far only the first one has been released. The second novel, 'The Power of Six,' doesn't come out until August, by which time it will be obvious if the first movie was profitable enough to continue, ala 'Twilight' or 'Diary of a Wimpy Kid,' or if it will stall at one installment like 'A Series of Unfortunate Events' or 'The Golden Compass.'

Can I Take Young Kids?
The book is recommended for tweens 12 and up, and the movie, similarly, is rated PG-13 for "intense sequences of violence and action, and for brief language." That basically means there are some freaky aliens (the Mogadorians are creepy, and they have these huge, winged beasts) that kill and destroy and will scare little children.

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'I Am Number Four' Trailer

I Am Number Four
Based on 30 critics

An alien with extraordinary abilities poses as an ordinary human to evade those sent to kill him. Read More