Stories are the core of many types of entertainment.Although developers and designers strive to develop new forms of entertainment that deliver richer audiovisual experiences to the audience, one of the key elements – a good story – remains the same. Storytelling is intertwined in people’s lives and has deeply influenced human societies for generations. It ranges from the simplest forms, such as bedtime stories for children, to more complex forms such as plays, movies, and games. Just as children love often-told bedtime stories, sometimes adults enjoy watching classic movies over and over again and never tire of them. Storytelling is not only a matter of how well the stories are memorized but also the overall emotional experience over the course of the storyline. The link between the story and the corresponding emotions is an intriguing topic for developing new interactive storytelling systems.