Every four years, Canterlot High has 'The Friendship Games' where they must rival with different schools with a series of different sporting events and every year, the cup has gone to Crystal Prep. So Fluttershy, Pinkie Pie, Rainbow Dash, Rarity, Applejack, and Sunset Shimmer must work together to win the cup. But they find out that the other Twilight Sparkle is on the opposing team.
