In comprehending stories, adults create mental models from which they follow the actions of the characters from the characters' different mental vantage points. Using a novel methodology, this study is the first to examine when children attain the narrative ability to track the mental perspective of characters. That is, when do children follow the actions of a story to different locations that a character is thinking about? The results of Study 1 demonstrate that this ability is nascent in 3-year-olds but adult-like by age 5. Study 2 demonstrates that 3-year-olds' difficulty is the result of the mention of the character's mental state per se rather than task complexity. Together, these studies shed new light on the development of narrative cognition in humans.