When the trailer for Captain Fantastic begins, it feels like an Edward Sharpe music video: parents raising their six kids off the grid, in the forest, playing with mud, wearing hats made of fox faces. But the story takes a turn when Mom dies, and Dad (Viggo Mortensen) has to integrate his kids back into society. Steve Zahn, Kathryn Hahn, Frank Langella, and a lot of kids also star in the new film, written and directed by Matt Ross.