Gerard Butler never seems to stray far from the tough-guy persona he solidified in his breakout role in 300; however, in the trailer for Machine Gun Preacher, he adds a softer side. In this real-life story, Butler plays Sam Childers, a biker and drug dealer who's up to his ears in trouble until he decides to reform his life. He takes off for Africa, leaving his lifestyle and family behind (including his wife, played by Michelle Monaghan).
He ultimately finds his calling in helping Sudanese children, and he goes about finding a sanctuary (the Angels of East Africa rescue organization) to prevent the land's youth from being forced into the army or sex slavery. Though the preview gets a bit treacly toward the end with the inspirational music and captions, the movie seems like it might be a powerful look at how one man's desire to change himself brought about greater change for the world. Machine Gun Preacher comes out Sept. 23, but watch the trailer when you read more.