Aine Yuuki, who is a regular student at Star Harmony Academy's normal division, meets Mio Minato from the idol division, who invites her to join Aikatsu to fulfill Aine's goal to make friends. She also befriends Maika Chōno and Ema Hinata who are also idols. Aine and Mio form a pair to become best friends to become the bright Diamond Friends. Karen Kamishiro and Mirai Asuku are categorized as Diamond Friends and are in the Diamond Class! (Source: Wikipedia)

The story takes place two years after Aikatsu Friends! with Aine Yuuki now in high school. One day she has an encounter with the mysterious idol Hibiki Tenshou who wears the shining Jeweling Dress.

The story revolves around Aikatsu Planet, a state-of-the-art virtual world where anyone can assume the role of an avatar and becoming a most popular virtual idol. Mao Otoha, an ordinary first-year student at the private academy Seirei High School, becomes a top idol avatar Hana when Hana's previous alter ego Meisa Hinata suddenly disappeared. However, Mao's new role as the avatar Hana is a secret to everyone else. (Source: Wikipedia)

The story of the anime revolves around Ichigo, who was just a normal middle school student until she suddenly got involved in the world of idols. The film will center on Aikatsu!'s greatest Super Live concert yet, the Dai Star Miya Ichigo Matsuri. Ichigo prepares for the concert with press conferences, last-minute lessons, and more. (Source: ANN)