Variety reports that Warner Bros. and director Wolfgang Petersen have set scribes Dan Harris and Michael Dougherty to adapt the Orson Scott Card books Ender's Game and Ender's Shadow into a film Petersen will direct.

The Hugo Award-winning young adult fantasy series begins on Earth after an alien attack. Gifted children are recruited for war, with a prodigy leading the assault against aliens.

Petersen is currently prepping Troy and hasn't locked his next movie yet, says the trade. He's reportedly still interested in doing Batman vs. Superman and is also developing Shutter Island, the recent bestseller by Mystic River author Dennis Lehane.

Harris and Dougherty co-wrote X2 with original writer David Hayter. The duo will team with "X-Men" series director Bryan Singer to create a year's worth of "Ultimate X-Men" comics for Marvel and then will likely move to the third "X-Men" film at 20th Century Fox.

They also wrote Charlie Chan into a Lucy Liu vehicle. Harris also scripted and just directed Imaginary Heroes, a drama that stars Sigourney Weaver, and Dougherty is adapting the cult horror comic Wake the Dead for Dimension Films.