The Mane Six can't wait for the Rainbow Festival in Hope Hollow! But when Twilight Sparkle and her friends arrive, they find the town and all its residents completely devoid of color. In an instant, their dream vacation starts to feel more like a nightmare! The Mane Six will have to solve the mystery behind this washed-out world if they hope to bring the "rainbow" back to the Rainbow Festival and color back to the lives of their new friends.