The series was announced in Kidscreen Magazine and will spawn its own line of dolls, doll clothing, and doll accessories.
The main plot of Equestria Girls is to rescue Twilight's crown and Element of Harmony. Which was taken by Sunset Shimmer in the Crystal Empire. In order to do this, Princess Twilight Sparkle must go through a magical mirror which teleports her to an alternate world. After Sunset Shimmer discovers that Twilight is there and attempting to gain back her crown and element of harmony, she puts diabolical traps and set-ups into place. Soon Twilight finds her friends Rarity, Applejack, Rainbow Dash, Pinkie Pie, and Fluttershy in the "human world." She learns that they were once friends, but their friendship was destroyed by Sunset Shimmer. Twilight brings them back together, and they help her win the crown in the Fall Formal.