Behind the horizon, at the end of the rainbow, lies it: the unicorn paradise. There, every day is a magical adventure for the three little unicorns Vanilla, Rosie, and Blue. Hooray, the unicorn school is starting! From now on, Vanilla, Rosie, and Blue will have flying lessons, botany, and unicorn magic on their schedule! But soon Blue realizes that it’s quite hard to always be calm and listen. And his new seat neighbor Fiet is so unfriendly! When the class is tasked with finding a mysterious flower that only blooms one day a year, Blue looks forward to the challenge. Too bad he has to work together with the grumpy Fiet.