In 2018 a young boy named 21 Emon dreams of becoming a space pilot and exploring space in general. He is the heir to a long line of hotel owners, which dates back to the founder of during the Tokugawa shogunate. Since the Earth has become a planet visited by tourists from all over the space, 21 Emon has to help out his family's business or they'll go bankrupt.

21 Emon тривав 1 сезон. Нових епізодів не заплановано.