Its story is set in Aikatsu Planet, a world where everyone can become cute idols using an avatar. While spending school life, the main characters are aiming to become top idols. Everyday parts such as the main character's school life will be filmed in live-action, and the Aikatsu Planet! world will be drawn in anime and 3DCG (like the previous series). The live-action part's cast members will form a unit "STARRY PLANET*" and perform as idols at events and on YouTube. A new Data Carddass game linked to the TV series, "Data Carddass Aikatsu Planet!" is also scheduled to begin its service this winter.
Iwata Koichi and Kagawa Midori are second-year students at Tozaiyama High School. One day, while coming home from school, they discover a shooting star rising up in the sky. The next day, Midori sees a shining figure in school and everyone on the school grounds starts talking about a ghost. At that point, a mysterious transfer student called Yamazawa Norio suddenly arrives at the school.