Aine's real Aikatsu! has just started. After transferring to the academy's idol division, she happens to belong to the same 'Production' as Mio. She's excited to get her very first job from her manager, Tamaki. On her workplace, the top idol unit that is ruling the Aikatsu! world, Love Me Tear's Karen Kamishiro and Mirai Asuka, appear!

When an idol obtains a brand of their own, they become idols on their own. With the advice given to her by her production company's stylist, Chiharu, the still idol-egg Aine begins her search for a brand that fits her. Although so many brands are around, it seems neither works. But then, Aine has a fateful encounter!