Directed by Lenny Abrahamson, Room (2015) stars Brie Larson as a young woman held captive for years in a small shed where she raises her son, played by Jacob Tremblay. When the child begins to question the world beyond their confined space, they plan an escape that will change their lives. Brie Larson won the Academy Award for Best Actress for her performance.

Från IMDB:
A little boy is held captive in a room with his mother since his birth, so he has never known the world outside.