The second book I've read this month with the same theme, people being kidnapped and locked away in rooms where they are kept as prisoners. In this case, the woman gives birth to a child in the room, and the story begins on his fifth birthday, and is told through the child's eyes.

The child, Jack, knows no other world than Room. He gets some impressions of the world outside from books and TV, but their captor is not generous, and the mother tells him the world they see on TV or read about in books is not real, because he does not want him to be disappointed by knowing he is a prisoner, and that there is a world out there he cannot reach. She employs their time together by teaching Jack to read and write, so he has some knowledge and skills that most children his age do not have, but is deprived of sensory and physical knowledge that other children do have, he has never touched or felt grass or trees, or seen or touched live animals.