The top four candidates for the Aikatsu! Ranking are announced. Yume and Mahiru from Four Star Academy, and Elza and Rei from Venus Arc. However before the final tournament begins, Yuzu reveals S4 will be having a concert to remember this year's members as she will be graduating this year. With all the preparation, Yume becomes frustrated about what song to sing at the concert, but she is not the only one, as her friends all have things on their minds. Yuzu and the previous members of S4 come to their rescue and help them overcome their problems. Yume gets the idea to use 'Episode Solo' as the song for the concert, even though it's what Hime's S4 sang the previous year. However Hime and Anna both reveal that the song has been passed down through all S4 generations and belongs to them, so they decide to sing it at the concert.