After stumbling upon a peculiar late-night TV ad for a luxurious resort, Nobita's dad, half-asleep, inexplicably books a stay. The next day, the family is puzzled when they can't locate the resort anywhere. To their surprise, a mysterious suitcase appears in Nobita's room, revealing a portal to a stunning resort run by robot attendants, all at no cost. Yet, as they delve deeper into this unexpected paradise, they uncover a hidden motive behind their enigmatic host.