Doraemon: Nobita and the Tin Labyrinth

It's spring break again, and Nobita has promised to go swimming at the "Platinum Hotel" with his dad. Nobita is initially thrilled, but he searches every travel agency without finding any hotel by that name. Then, a mysterious suitcase arrives at Nobita's home, and through it, he is transported to the Platinum Hotel. While Nobita and Doraemon are happily playing on the island, Doraemon suddenly goes missing; he was carried off by a mysterious rocket. Later, Nobita meets Sabio, who turns out to be an alien from the planet Cham-Cham, and learns that Doraemon has been taken away by robot armies. To rescue Doraemon, Nobita decides to head to Cham-Cham Planet and challenge its dictator, Nabo-Jistler I.