Hanasato Minori has dreamed of becoming an idol since seeing Kiritani Haruka on TV. After Haruka retires from being an idol, the two manage to become friends. Soon, Minori and the VIRTUAL SINGERs convince her to return to idolhood, forming MORE MORE JUMP! along with Momoi Airi and Hinomori Shizuku. During practice, the group discovers a song named "Untitled" on their phones. Upon playing it, they are transported to the Stage SEKAI. There they meet Hatsune Miku and Kagamine Rin.