Soon after Big Mac and Marble Pie announce their love for eachother, Marble is sent to get executed for a crime that she claims she didn't commit. Everypony who knew her and Big Mac are determined to find out what happened.

Princess Celestia has a prophetic dream of Sombra's return. Celestia and Luna are puzzled, as they try to find out how this has happened, with the help of Twilight and Cadence. Although, Sombra has different plans for a certain navy-blue alicron.