Pluto. The Last FrontierPluto. The Last Frontier2015Queuebrick VideoQueueLWatchedWFavoriteFListsDiscussionWhere to watchCopy short link2015Pluto. The Last FrontierDocumentaryDirected by Ruth Chao·2015QueueLWatchedWFavoriteFWhere to watchListsRateRateNA/10 avgNo member ratings yetDirectorRuth ChaoOverviewDiscussionCastCrewDetailsWhere to watchNo cast listed.