After the Dazzlings were defeated in the Battle of the Bands, the girls retreat to a café far from Canterlot High to avoid attention and to discuss what'll happen next with their pendants and hope shattered. However, two teens performing at the café catch the girl's attention: Desarae Beat and Total Sound. With a little help from the last shards of Siren magic the girls have left, they might just be the Dazzling's last chance to get back home.

Unfortunately, the Rainbooms have a special eye on them, and they're not letting the Dazzlings slip by on their takeover attempt so peacefully.

Note: Crossover tag comes into play at the climax of the story.