When Sunset Shimmer first went into the human world, she never questioned whether she had a human doppelganger. She never questioned whether her brother, Garrett Shimmer, had a human doppelganger either. But now she's in for a big surprise when she finds out that a human Garrett Shimmer does indeed exist. And this Garrett will also meet Sunset's friend, the human Twilight (AKA Sci-Twi) Sparkle. When they meet, Garrett's world will turn upside down.