Grandpa wins the top prize in a shopping district raffle. The prize is none other than “A Trip to a Southern Island.” By pure chance, no one else in the family can go, so lucky Maruko gets the spot. After a comical journey mixed in with a bunch of grown-ups, she finally arrives on the island.
おじいちゃんが商店街のクジで特賞を当てた。商品はなんと、”南の島へのご招待”。たまたま、家族のみんなが都合悪くて行けないため、運良くまる子が行けることになった。大人にまじって珍道中の末、やっと南の島へたどり着く。