The document discusses the concept of "gamified stories" or narratives that are structured to be playable. It describes how gamified stories allow players to gain agency over the plot and characters through embodied gameplay. This gives the player the ability to participate actively in the narrative, not just cognitively but physically as well. The document also examines different levels of agency players can experience, from controlling a character's actions to shaping the overall narrative structure. It explores how interface devices like motion controllers can extend the player's body into the game world and how this embodied participation is key to the experience of "playing the plot."