Thelma is a perfectly ordinary pony, but she dreams of being a glamorous, beautiful unicorn. One day, a completely accidental mix-up involving a carrot and some pink glitter miraculously makes her wish come true. Almost instantly, Thelma is swept up in a wild world of international fame. She becomes a massive superstar with fans chasing her down the street and cheering her name. At first, the attention is absolutely thrilling. However, Thelma soon discovers that being a highly famous unicorn is exhausting, lonely, and not nearly as fun as she expected. She starts to miss her quiet life and her very best friend, Otis. This funny and joyful story proves that learning to love exactly who you are is the best magic of all.