Mafuyu’s homeroom teacher Mr. Maki isn't just a conundrum, he's also a kidnapper! Right when Mafuyu thought she was getting to the bottom of her missing memories, Mr. Maki spirited her away to an amazing mansion. While Mafuyu is a sucker for mansions, she does have a school to save. But she can’t escape on her own, and all her friends think she’s just home with a cold. Now her only choice is to rely on her enemy!
It’s time for the Midorigaoka school festival, and rumors abound that Mr. Maki has some trouble planned. Mafuyu escapes from the Hanabusa mansion and heads to campus in her Natsuo disguise, while Takaomi welcomes a posse of Midorigaoka alumni and some of Mafuyu’s delinquents from Saitama. With the troops all assembled, the only thing left to do is wait for Mr. Maki to make his move…
Mr. Maki’s hired goons have taken over the auditorium! With the stage inaccessible due to the massed delinquents, the school play has to be canceled for “technical difficulties.” But disaster is averted by quick thinking and teamwork as the disappointed audience is sent to view the other marvels of the festival. Now all Mafuyu and her friends need to do is take down the huge crowd of invading bruisers! The fight for Midorigaoka is on!
Mafuyu and her friends manage to save the school festival at the last minute, and with it the future of Midorigaoka Academy! But when Takaomi rushes to the hospital to tell his grandfather, all he finds is an empty bed. Has victory come too late?!