In 2035, virtual reality has advanced to the point where people can enjoy travel and live events without leaving home. Idols now stage VR performances for audiences around the globe. As their popularity grows, Kanon Private Academy opens on Beginning Island to train new idols. Six girls form two rival trios: Vivi, Kokona and Sena are StarRing, while Miku, Nanami and Yuchou are Shadow. Both units compete for the tiara that marks first place in the World Idol League. A short-format music series built around that rivalry.