About Equestria Girls: Rainbow Rocks
The Equestria Girls are back on POP!
Canterlot High is hosting a musical showcase and Rainbow Dash, Applejack, Pinkie Pie, Rarity and Fluttershy are going to be performing with their new band, The Rainbooms!
When a mysterious new girl group arrive the music showcase is suddenly turned into a Battle of the bands. As tensions mount between the competing musical acts, a reformed Sunset Shimmer begins to suspect that these new girls are actually magical beings from Equestria and are after something far more sinister than being named best band at Canterlot High!