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?

Passionate music-lover Eripiyo only wants to see her favorite underground pop group, ChamJam, make it to the big stage at Budokan. Because they've enriched her life by their very existence, Eri is willing to dedicate everything she has to see this dream fulfilled—even her health. At their last performance she got a crazy nosebleed. Hey, no one said being a super-fan was easy!