In which the Rainbooms, the Crystal Gems, and their allies get mixed up in a series of adventures concerning outer space.

When Twilight and her friends cross the dimensional portal once again, they end up in Paris, France, and meet the superheroes Ladybug and Cat Noir.

The Ghost crew has crashed in Equestria with the Galactic Empire hot on their tail. Can six ponies and a baby dragon help them fix their ship and return home before Ponyville comes under Imperial control?