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The first trailer for "Ender's Game," the long-awaited movie adaptation of Orson Scott Card's 1985 science-fiction novel, is available online — and it certainly boasts action and brooding youth.

Asa Butterfield, who played the title role in "Hugo," plays Ender Wiggin, a young man sent to Battle School to train ahead of an impending alien invasion. The movie stars Harrison Ford as the school's commander, Col. Graff, and Ben Kingsley as Ender's trainer, Mazer Rackham. Also in the cast are Viola Davis ("The Help"), Hailie Steinfeld ("True Grit") and Abigail Breslin ("The Call").

The movie, directed by Gavin Hood ("X-Men Origins: Wolverine"), opens Nov. 1. It remains to be seen whether the studio, Summit Entertainment/Lionsgate, can sell the movie without dealing with the long-simmering criticism of Card, a descendant of Brigham Young and columnist for the Deseret News, for his virulently anti-gay writings.