The movie continues off from the future 15 years later from the present. Future Nobita, Gian, Suneo and Dekisugi finish their bachelors' party at Gian's house. Suneo and Gian are both drunk, except for Dekisugi and Nobita, as Nobita is ready to go back home. As Nobita is driving back home, the trio can't wait to see Nobita finally getting married to Shizuka the next day. However, Nobita doesn't seem too happy and stares outside of the car window, and remembers his longtime childhood friend, Doraemon. The story continues from the first movie, with Nobita saying Doraemon that he wants to go back to the present time and misses Present Shizuka.<br /><br />At the present time, August 7, which is Nobita's birthday, Tamako shouts at him for a failed test paper she had found. Nobita is upset about this event and and trying to hide his remaining test papers, he finds a teddy bear and Nobita explains that his grandmother fixed it when he was young, and reveals that his grandmother passed away when he was in kindergarten. He goes to his closet and find his grandmother's album, reminiscing the good times with his grandmother in the past. He breaks into tears and demands to see his grandmother once again. So he and Doraemon travel back seven years to the past to see his deceased grandmother.<br /><br />They succeed finding Nobita's grandmother while young Nobita was being consoled by Shizuka after being bullied by Gian and Suneo. Grandma says her wish to see Nobita joining school which Nobita fulfils by bringing his school bag and showing it to Grandma by wearing it. Grandma then expressed her last wish as if to see Nobita's bride. Nobita promises to her that he will show his bride to Grandma. He asks Doraemon for which Doraemon said that it was not sure whether Nobita will marry Shizuka or not. They check the Time TV and see that Nobita is late to his marriage and was not visible for a long time.<br /><br />Suneo concluded that Nobita had lost confidence so he ran away, which Shizuka denies (though Suneo's guess was correct). Doraemon and Nobita go to the future after bidding goodbye to Grandma. There Nobita became an adult using Time Cloth and Nobita replaces Adult Nobita at the marriage. Seeing Present Nobita petrified at the wedding altar with Shizuka, Doraemon guides him on how to do it. Nobita's teeth start to grind. He was almost unconscious when the priest asked whether he sweared to marry Shizuka. He didn't answer and Nobita was blown in the ear by Doraemon and came back to senses. However, when the priest says, "You may now kiss the bride", present Nobita blushes and falls. People gather at the top floor of the hotel as present Nobita is enjoying the food, as Shizuka giggles at him, even though Doraemon told him to control himself so people won't notice something suspicious, including his bride. The female announcer then tells everyone to watch Nobita and Shizuka cut the wedding cake, overheard, Gian and Suneo decide to watch and join in too. When the wedding cake finally emerge