Hiroshi's mission was to oversee the Mexican division of his company, with a focus on cultivating a new cactus breed that produced the most delectable nectar. Bid farewell to their Kasukabe comrades, the Nohara family departed for Mexico. Shinnosuke was eager to encounter alluring and fashionable girls. But upon their arrival at Mardequellyovaca city, they were greeted with strange neighbors and a life of discomfort. Unbeknownst to them, carnivorous cacti were lurking and ready to attack. With the assistance of their neighbors, the Nohara family valiantly battled the harmful cacti to save the town.