The mystery of his identity drives the second half of the movie. Without giving too much away, the relationship between the thief and Doraemon's ear-less past provides one of the most emotional payoffs in recent Doraemon cinematic history.

Content Idea: A deep dive into the movie-original characters.

While exploring the museum, the group meets Kurt, a young apprentice repairman with a habit of creating "useless" gadgets that often backfire. As they hunt for the missing bell, they uncover a deeper conspiracy involving the museum's director, a legendary scientist, and the powerful "Peppeler Metal" that makes all gadgets possible. The film balances humor with heart, particularly focusing on the deep bond between Doraemon and Nobita, revealing why that specific, old bell is so irreplaceable to them.