In Tokyo's Chiyoda-ku is the traditional school Otonokizaka High. Second year student Kosaka Honoka discovers the school will be closed in three years. In order to avoid being closed, the school must increase its number of prospective students.

µ's completes their first concert in an empty auditorium. In attempt to get a massive crowd for their next performance, Honoka tries to recruit Hanayo.

The girls learn the idol festival, 'Love Live!' is going to be held, and immediately set their sights on performing. The girls are permitted by the director they can perform if they do not fail their final exams.

The school is threatened to be closed. In order to protect Otonokizaka High, Eli looks for ways to make the open campus a success. When trying to help the group's success, Umi tries to get Eli to teach them how to dance.

It is a new semester and the group is ranked 19th, which is high enough to be considered for Love Live! µ's next event is at the school festival, but they are forced to perform on the roof.

µ's cancels its school festival concert after Honoka collapses. Honoka learns the group has been revoked from entry into Love Live. However, due to their success, the school is going to admit new students next year.

Honoka quits being a School Idol after she failed to realize Kotori was suffering. µ's goes on hiatus, and Honoka is left without a goal. Honoka arranges for Umi to meet her, and tells her how she really feels.

Having avoided the closure of Otonokizaka High, the members of μ’s return to their everyday lives. News of a second Love Live reaches the girls. This time teams that win their regional preliminaries move onto the finals.

The Love Live regional preliminaries are just before the girls. Because the group is free to choose any location for their performance, Honoka suggests they perform at school, but Nico and Hanayo insist they cannot win unless they choose a location with greater impact.

μ's is invited to perform as a guest at the Akihabara Halloween event. They need local support to win the Love Live. By putting on a impressive performance, μ's hopes to close the gap between themselves and A-RISE before the final preliminaries.

When the Love Live ends, so will μ's. The day before the event, the members reach a unanimous decision. As usual, the girls gather on the roof and end their practice amidst a friendly atmosphere, but when they realize it's their last practice together, they find themselves unable to go home and end up spending their last night together at school at Honoka's suggestion.

Today is graduation. Having finally finished her farewell address, Honoka heads to school in high spirits. At the gates she meets Rin and her friends. They head to the club room together, where they find a trophy and flag.