Doraemon: Nobita's Undersea Fortress

Doraemon: Nobita's Undersea Fortress · Episode 1 · “Doraemon: Nobita's Undersea Fortress”

The plot revolves around a summer vacation of Nobita and his friends under the waters of Pacific Ocean. Jaian and Suneo take Doraemon's underwater vehicle and travel through the Atlantic Ocean, trying to find a treasure ship. Along the way, they discover that the environment gun that Doraemon used...