Recent developments in the Aikatsu world have seen various different Idol schools being connected together, allowing different idols the chance to meet each other. In light of this, Karen and Mirai invite the top idols; Hibiki Tensho, Alicia Charlotte, Mizuki Kanzaki, Hime Shiratori and Elza Forte to Karen's mansion to take advantage to the situation and plan a collaboration event between the schools.
