Doraemon: Nobita's Great Adventure in the South Seas

Nobita and his classmates visit the library to find information about the sea for their summer homework. Upon seeing the book Treasure Island, they become fascinated with the idea of treasure hunting. Using Doraemon's gadget, the "Treasure Map," they unintentionally discover a real-life Treasure Island. Encouraged by this discovery, Doraemon and Nobita persuade Gian, Suneo, and Shizuka to join them on an adventure to the island. Once there, Doraemon uses the "Legend Restoration Machine" to enhance the adventurous atmosphere. However, this suddenly causes a disturbance in time and space, transporting them to the Caribbean Sea of the 17th century where they get caught up in battles between pirates. Not only does Nobita get separated from everyone else, but Doraemon even loses his fourth-dimensional pocket. In the chaos, Nobita is rescued by a pink dolphin named Ruffi and brought to an island, where he meets a boy named Jack who lives alone. Meanwhile, Doraemon and the others are saved by Captain Git, a pirate who dominates seven seas, and his friend Captain Colt's daughter, Betty. With their help, they set out to rescue Nobita from the legendary Treasure Island. They later discover that the island is actually the secret base of Dr. Kolon and Cash, a villainous group from the future world who modify creatures into ferocious beasts for sale. Will Doraemon and the others manage to reunite with Nobita? Can they stop Cash's criminal organization's plans?