The idol group ST☆RISH and composer Haruka Nanami have a common goal to perform at the opening performance of the international sports festival commonly known as SSS. However, the selection concert was thrown into chaos by the sudden appearance of the idol group HE★VENS from Raging Entertainment. However, under a certain idea proposed by the senior idol group QUARTETNIGHT from Shining Agency, the three groups began to aim for a new stage. HE★VENS swore revenge, QUARTETNIGHT aimed at complete victory, and ST☆RISH set its sights on the future. What will be waiting there...? The idols who caused the great revolution of love have now become legends! A month has passed since the grand SSS opening singer selection live, and Haruka is excited when she recalls that concert. The sudden appearance of HE★VENS caused QUARTETNIGHT and ST☆RISH to fall into temporary chaos. All three idol groups aim to be the opening singer for SSS, and the one who finally got the qualification of opening singer is QUARTETNIGHT. Unexpectedly, QUARTETNIGHT rejected this opportunity. They hope to compete with HE★VENS and ST☆RISH again and compete fairly for the qualification of opening singer this time. The four members of QUARTETNIGHT decided to move in together to live in the dormitory, which is what they need now. Other groups have a strong sense of group, but the four members of QUARTETNIGHT rarely have such a sense. On tonight's live music program SongFesta, ST☆RISH and HE★VENS both served as guests. The members did not know about this situation, and as opponents in the SSS final battle, such a meeting was really awkward. Anime movie: 23zzw.Com