A plot device is a literary technique used to drive a story forward. Storyboard (10 letters) is a visual representation of the plot, characters, and events of a story. TWIST (5 letters) is an unexpected turn of events that changes the direction of the plot. HOE (3 letters) is a tool used to cultivate land, but can also be used metaphorically to refer to a character's development or growth. All of these elements are plot devices used to create a compelling narrative.