Middlemost Post Season 1 (未知年份)

Parker J. Cloud, an exuberant rain cloud, lives and works in the Middlemost Post Office with Angus, a burly, rule-abiding mailman who cherishes his solitude and values efficiency, and Russell, their magical pet walrus whose stomach is so big that it doubles as a storage room. Together they journey through Mount Middlemost and the six territories of Somewhere to deliver the mail...