The Cutie Mark Crusaders have a plan! They're going to stage a play and become huge stars in Manehatten! Well, if they can get their lines right. To practice for their big musical, they have to borrow a few things from Sweetie Belle's sister, Rarity, to get everything just right. When a prank during rehearsal inadvertently reveals a disturbing secret, will the three friends be able to find out who's lying before a sinister fate can befall them? Or will they be silenced before they can discover the truth?