Doraemon the Movie 2026: New Nobita and the Castle of the Undersea Devil

Nobita and the others cannot agree on where to go for summer camping, so Doraemon suggests something nobody has tried: camping right in the middle of the ocean. With the Underwater Buggy and the Tekio Light, the group dives down and turns the seafloor into their campground, meeting strange sea life along the way. After they discover a sunken ship, they run into a mysterious young man named El, who turns out to be a soldier from the Mu Federation, an undersea nation that distrusts people from the surface. Tension rises fast, and then an emergency message arrives saying the Oni Rock Castle has begun to move. With the undersea people terrified and Nobita’s group caught in the middle, they have to figure out what the castle is and why it is waking up before the situation turns into a disaster for everyone above and below the water.