Doraemon: Nobita and the New Castle of the Undersea Devil

The 2026 film is a complete reimagining of the 1983 classic Doraemon: Nobita and the Castle of the Undersea Devil, which was itself based on the Western myth of Atlantis . The story begins with Doraemon and his friends—Nobita, Shizuka, Gian, and Suneo—embarking on an underwater camping trip using Doraemon’s futuristic gadgets. Their adventure takes a dramatic turn when they decide to explore the deep seas beyond their initial plans.