Action Mask's 'Action Stone' has been robbed by Leotard Devil. Without the Action Stone, he can't go to his world. So he chooses Shin-chan and his family to get back his stone through the Action Card numbered 99 (the most precious card in the whole set of choco chips.) According to the plan of Action Mask and Ririko, they make Shin-chan's family to move to a beach so they can…
Takakura-fujin
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Shinnosuke and his family go to the 20th century museum, a recreation of the 1970s World Expo in Osaka. His parents are exposed to nostalgia of their younger days, and are treated to the prospect of realizing their childhood fantasies once more. Unfortunately the curators of the museum have other plans of putting the future to an end, and living in the past century forever in…