In this film, part of the moon was destroyed by an alien resembling an octopus. Now, things turn out exactly where Nagisa Shota and his E-class colleagues are set to deal with those changes that occurred and the octopus was killed by the government after it decided to act as a teacher for their grade. A quick solution must be found or the land will be destroyed once in the school year and within a short period of time.
It's not as infectiously wacky as the first film, but AC: Graduation is still a worthy closing chapter for one of the most unique YA franchises you'll ever see.