The story takes place in Kyoto in 1877. The atmosphere of the city and people in Kyoto was greatly depressed due to the transfer of the capital to Tokyo. Despite this, Genzo Shimadzu Sr. was busily pursuing his research with the aim of flying a light balloon requested by Kyoto Prefecture. After watching the balloon take off, the protagonist (Shimadzu employee) aspires to connect Genzo's passion from the past to the present and into the future.