Basically the movie is a summary of everything happened in assassination classroom during their third Jahr of junior high with koro sensei. The summary is narrated Von Karma and Nagisa. It is a really good movie. Du will have a rollercoaster ride down the memory lane of 365 days with Karma and Nagisa. The movie will make Du laugh and cry at the same time as Du remember the good times before the final glocke rang.
"I hope Du can kill me Von your graduation" ~Koro sensei and Nagisa Shiota