Viggo Mortensen has signed on to star in the indie drama Captain Fantastic for Electric City Entertainment and director Matt Ross (28 Hotel Rooms).

The actor will portray a father, who has lived off the grid in the Pacific Northwest forest with his six young children for the past decade. He must now return to acclimate his children to modern society.

Here's what Matt Ross had to say in a statement about landing Viggo Mortensen.

"Viggo Mortensen's dedication to his craft and to the world of the story he's telling have been an inspiration to me for years. There is a depth to his art that I greatly admire. Any film he's in is a film I want to see. He's one of the greats. Getting to collaborate with him on Captain Fantastic is quite literally the best thing that's happened to me since my wife asked me to marry her."

Matt Ross is directing from his own original script, with Lynette Howell and Jamie Patricof producing. Lynette Howell also produced Matt Ross' directorial debut 28 Hotel Rooms, which starred Chris Messina. Matt Ross is also an actor, appearing in films such as The Aviator and Good Night, And Good Luck., and TV shows Revolution, Magic City and American Horror Story. Viggo Mortensen most recently starred in On the Road and Everybody Has a Plan.