Timothy Olyphant Says You’re Not Number 4, Sharlto Copley, I am Number 4!

But as it turns out, neither one of them is number four. Instead, Alex Pettyfer will be playing the titular Number 4, while Olyphant, taking over for Copley, will be playing Henri, that four kid’s mentor and guardian. Get it? That’s the twist in this story, see. Ahem.

Copley, who became instantly famous after fighting aliens and humans in “District 9″, had added “I am Number Four” to his schedule after shooting “The A-Team”, but now it looks like he might have put too much on his plate. Variety reports that Copley had to bow out of “I am Number Four” because of press obligations to Joe Carnahan’s “The A-Team”, leaving space for our man Olyphant to slip right in, with plans for Olyphant to shoot the movie during the summer hiatus from his FX show “Justified”, which if you’re not watching, then you suck and need to get better tastes in TV.

“I am Number Four” will be directed by D.J. Caruso (“Eagle Eye”, “Disturbia”), and produced by Dreamworks and Michael Bay. The script is by Alfred Gough, Miles Millar and Marti Noxon, based on a series of upcoming young adult novels co-written by James Frey (yes, that James Frey).

The plot of “I am Number Four” finds Pettyfer playing one of nine aliens who are the last survivors of their planet, which was blown up by a rival alien race. The aliens hide out on Earth, where they pose as high school teenagers. (Not exactly the cover I would have chosen, but that’s just me.) Eventually, though, the bad guys locate them, determined to finish the job.

Kevin Durand, blubber boy in “X-Men Origins: Wolverine”, will play one of the bad aliens that follow Pettyfer and the other eight alien survivors to Earth. Also in the cast are “Glee’s” Dianna Agron (bottom, left), playing Pettyfer’s human love interest, and “The Sorcerer’s Apprentice’s” Teresa Palmer (bottom, right), playing Number Six to Pettyfer’s Number Four.