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 of what happened to Anne Shirley before she was adopted.

At the bowling club of Ikkokukan High School in Nagano Prefecture, Mai, the club captain, prioritizes everyone's enjoyment over winning. However, her passionate junior, Rina, declares, I want to win. When Rina threatens to quit the club, Mai tries to convince her to stay, but Rina challenges her to a match and says she'll only remain if Mai wins. As the game begins, the bowling ball suddenly starts to glow, and all five club members are engulfed in a mysterious light. When they awaken... they find themselves transported to none other than the Warring States period! (Source: Official site, translated)

Dreams begin to haunt Lady Sheru -- dreams of her past life as Pirotesse. Her love, Ashram, is being tormented at the hands of the soul of Barbas posing as their former king, Beld of Marmo. Interpreting this as a plea for help, Sheru searches for a way to save him by entering the chaos realm using the Chaos Ring. Meanwhile, Redon and his friends are called to arms again as ancient creatures begin to appear after being sealed away for centuries. Both their paths will cross once again, and on their shoulders will the fate of Crystania lie. (Source: ANN)