The Mane 6, the Knights, Megan, and Discord are invited to the Midsummer Theatre Reopening, hosted by Coco Pommel and Coloratura (Rara). Things are going well until accidents start happening at the Midsummer Theatre, like scaffolds falling, snakes found in the popcorn, and the costumes literally falling apart at the seams. All hooves point to Discord when they found evidence leading to him.

Rarity puts her detective cap on to clear Discord before he is set for trial. What she and Megan find will point back to four familiar ponies from the past.