Alina (voiced by Kelly Sheridan) is a newly promoted rainbow fairy. Accompanied by her furry friend Bibo, she came to the magnificent fairy school, where she will study seriously and systematically, and draw the first rainbow for the fairyland in the spring flight as the final exam. However, the evil witch Luvina tried to destroy this grand event, and Alina discovered her conspiracy in time. In school, Alina met many fairies who were as kind as her - the introverted and sensitive Gilly, the handsome Linton, the cold and warm Shabaosi, the mysterious Lumina, the unruly Xinma, etc. The time they spent studying and living together made them forge a deep trust and friendship with each other. In the face of huge threats, can they unite and fight together to crush Luvina's conspiracy?