Aikatsu Planet! The Movie is the movie adaptation of Aikatsu Planet! series. Screened alongside the movie Aikatsu! 10th STORY: Mirai e no STARWAY. 
Mao Otoha, who is now a second year high school student at Seirei Private High School, is now performing as the top idol Hana in Aikatsu Planet! 

A few months after the Planet Princess Grand Prix, her schedule is packed everyday. The reason why Mao can be an active idol is
because of the bond she has with her fans, in which she has changed and felt touched, and now would like to deliver her gratitude to those important around her by launching the "Aikatsu Planet! Gratitude Festival".