On a hot summer day, Shimojun told his friends the story of "Treasure Island". Nobita (voiced by Huimei Ohara) was in high spirits and boasted about finding the pirate treasure in front of Fatty Tiger (voiced by Kimura Takashi), Xiao Fu (voiced by Guan Zhiyi) and Shizuka (voiced by Kasuki Yumi). Of course, in the end, he has to rely on his loyal good friend Doraemon (voiced by horseradish). Doraemon took out the secret prop "Map of Treasure Island", while Nobita coincidentally found a new island with gold and silver treasure in the center of the Pacific Ocean. After that, the good friends set sail all the way to the center of the Pacific Ocean. When the initial joy was over, a group of mysterious pirates stopped the crowd. After a scuffle, Jingxiang was snatched by the other side as another girl. At the same time, Nobita and others saved Vlok, a boy from the island (voiced by Dahui Yamashita). In order to save Jingxiang, they followed the tracks of the pirates and crossed the vast sea.