The world is on the brink of destruction. Kadode, Oran, and their friends head back to Tokyo. Meanwhile, Oba tries to use the password to shut down the reactor of the mothership before it explodes.
Kadode, an alien with advanced technology, tries to assist a stranded pregnant woman, leading to an unintentional train crash. Determined to never falter again, he vows to use his abilities responsibly.
Futaba makes a decision regarding the task assigned to her by SHIP. Early in the morning, Ontan sneaks off somewhere, causing Oba to fear the worst. Together with Makoto, he tries to find Oran before anything worse happens.
Knowing that the world is about to end, Kadode arranges to meet with her former teacher, Watarase. Oba encounters an invader and questions them about the current situation on the mothership. The Occultism Club goes on a summer camp trip.
Oran encounters the invader who has taken over Oba's body and decides to temporarily house him with Kadode. Meanwhile, the JSDF and other organizations begin a public hunt for the invaders after their existence is announced to the public.
It's Christmas and the girls are celebrating together. Meanwhile, the mother ship is increasingly decoupling other smaller ships that are being shot down by the Fujin Model 7, but not every one of those shots is going well.
En un Tokio al borde del colapso, Kadode, Oran y sus amigos enfrentan la decisión de volver. El gobierno adelanta el lanzamiento del arca "Ocean" para evacuar la ciudad. Mientras tanto, Kohiruimaki trama su propio plan en secreto.
Una enorme nave inmóvil aparece en Tokio, dejando a la humanidad al filo durante tres años mientras la vida cotidiana persiste bajo su amenazadora presencia.
A look back at the elementary school days of Oran and Kadode. Oran befriends Kadode, who is bullied by the rest of the class, during a summer course, but finds it difficult to stand up for Kadode at school. Also they find a weird creature.
Kadode and Oran graduate from high school and face a new chapter in their lives. Meanwhile, Japan is working hard on the construction of the Chokujin, while the existence of the invaders remains an official secret. But there is resistance.