With at least 37 episodes, Pretty Rhythm Aurora Dream is basically a show that represents 3 girls' dreams. They all want to do the Aurora Rising, the highest jump ever done by a Prism Show Performer. Harune Aira, a girl with orange-red hair and crimson red eyes, is accidentally scouted by Jun to be a Prism Show performer. Amamiya Rizumu, a strong willed girl who has orange hair and eyes, is determined to become a part of the Prism Show and do the Aurora Rising. Takamine Mion, a famous idol with blonde hair and violet eyes, decides to become part of the Prism Show after seeing Aira's star aura.
Later on, the three rivals/frenemies become a group, called MARs, which is made up of each girl's first initial from their name. This name is decided by 24 year old Takigawa Jun, the manager of MARs, on Aira and Rizumu's birthday. MARs starts performing together, doing jumps together, practice together, spend time together, heck, even become best friends with eachother! The once lonely Mion warms up to Aira and Rizumu mostly because of them being in the same group and being together for almost all the time. MARs becomes famous in the later episodes.
Callings is a boy group of idols. The leader of Callings is Sho, who seems to take a liking to Aira. Hibiki is a member of callings, and he likes to tease Rizumu, whom we suspect he likes. The last member is Wataru, who seems to like Mion, even though he insists he treats Mion only as his younger sister.