The film tells the little-known coming-of-age story of two witches in Oz. Elphaba (Cynthia Erivo), who is misunderstood for her green skin, and Glinda (Ariana Grande), who is dazzling and ambitious, met at the University of Oz, and established a deep friendship despite their different personalities. However, with an encounter with the Great Wizard of Oz, their friendship reached a crossroads, and the two faced completely different destinies. This fantasy adventure reveals the true meaning of friendship, strength and self-discovery.