Shadowkin, an alicorn, has lived secretly with his twin unicorn sister, Silent Scream, for the last 18 years of their lives. Their parents left them when they were six, forcing Silent to take on a life of crime to keep them fed and in their home. After they reached 16, Shadow convinced her to stop her life of crime and get a regular job. In the present, however, she broke that promise to him. Now she's gotten him exposed, and in prison. How will the always silent alicorn deal with the prisoners and plot his escape? Only time will tell.