While dozing off in front of the television late one night, Nobita's father came across a peculiar advertisement advertising a wondrous resort. He absent-mindedly made a reservation, oblivious to the fact that he was conversing with the commercial. After awaking the next day, he shared his vacation plans with the family, but was puzzled to discover that no such property existed on Earth. Suddenly, a suitcase materialized in Nobita's quarters, prompting him to investigate. Inside, he discovered a portal leading to a robotic run, breathtakingly beautiful retreat, which was offered entirely free of charge. Unfortunately, the person who invited them there had a hidden motive.