Trixie is tired of being the cast-off and the laughing stock of Equestria. When she gets her hands on a rare spell, she finally has the means to seek her revenge on Princess Twilight. Switching their bodies, Trixie becomes an overbearing royal overlord who wants everything her way. In the meantime, Twilight is stuck in Trixie's body and the Mane 6 have all been scrambled.