There's a whole world outside of Mina and Takuma's apartment, filled with different humans and robots all connected to the happy little family. Now, they're all about to intersect as a man with a serious grudge against robots plans a terrorist attack. Junior high students, stray robots, and even a Martian all have a role to play. Meanwhile, Mina's job, as always, is to protect Takuma—even as he rushes headfirst into the fray!