Where is Adventure Time?
Setting and mythology. The show is set in the fictional Land of Ooo, in a post-apocalyptic future about a thousand years after a nuclear holocaust called the Great Mushroom War. According to Ward, the show takes place after the bombs have fallen and magic has come back into the world. Adventure Time is set in the post-apocalyptic Land of Ooo, which was ravaged by a cataclysmic event known as the Mushroom War; a nuclear war that destroyed civilization a thousand years before the series’ events.Adventure Time is an American animated fantasy franchise created by Pendleton Ward, set in the post-apocalyptic Land of Ooo.