Luster Dawn has made new friends! Moving to Ponyville at the encouragement of her teacher Princess Twilight Sparkle, Luster must carefully navigate her way through the biggest challenge she has ever faced…socializing with said friends and the other students attending the School of Friendship. However, murders have been reported around Equestria, the statue of Chrysalis, Tirek, and Cozy Glow has vanished, and a new student has arrived at the school as well; a changeling that refuses to accept Friendship. Can Luster and her friends work together to solve this mystery and help this new student or will they allow their differences to tear them apart, along with Equestria itself?