In Fujisawa, Sakuta Azusagawa is in his second year of high school. Blissful days with his girlfriend and upperclassman, Mai Sakurajima, are interrupted by the appearance of his first crush, Shoko Makinohara.

Twelve years after Char's rebellion, Hathaway Noa leads an insurgency against Earth Federation, but meeting an enemy officer and a mysterious woman alters his fate.

After the idol group Aqours has won the final Love Live! contest, its remaining members prepare to enroll at a new school only to run into some unexpected trouble while the former members go missing on the way to their graduation trip. Separated, the girls begin to realize the value of their friendships as they attempt to find a solution to their various crises.

The idols of 765 Production continue on their neverending journey—towards a new stage, towards a bright and shiny future! The girls and their producer have gone through thick and thin, and have stood face to face with all kinds of difficulties. It's time again for the girls to foster their friendship, and through great discipline, they step forward to their starry future.

Although μ's, the defending champions of the school idol tournament, plans to dissolve their group after the graduation of their senior members, they receive news that leads them to holding a concert event! The 9 girls continue to learn and grow in this new and unfamiliar world. What is the last thing that these girls can do as school idols? With the clock ticking, what kind of meaning will the μ's members find in performing the most exciting live performance?