Synopsis

Youji, Kei, Kelly, and their bear-shaped robot Oscar are back saving the town with their Fastening Machines. This time they encounter Samhen, a quiet new kid in Kei and Kelly's class, along with his AI companion Jack. While Samhen's reserved and doesn't open up easily, Jack more than makes up for it—the chatty robot helps bridge the gap between his shy owner and everyone else. When danger suddenly strikes the town one afternoon, the young heroes have to jump into action to protect everyone. The story focuses on the relationship between humans and AI, and how these kids fight to keep that bond safe.

Content compiled by AnimeList.moe from publicly available sources.