Marika Kato, daliba ta shekara ta uku a Hakuoh Girls' Academy, halaltaccen ɗan fashin teku ne a sararin samaniya tare da Letter of Marque. Tsakanin karatunta, tana jagorantar kulab ɗin jirgin ruwa na sararin samaniya na makarantarta, tana aiki na ɗan lokaci a Cafe Lamp, kuma kasancewarta kyaftin na jirgin ruwan ƴan fashin sararin samaniya Bentenmaru, kwanakin Marika suna da yawa. Wata rana, Marika ta sami aikin yi wa wani babban jirgin fasinja fashi, kuma ta gano cewa a cikin jerin fasinja akwai Kanata Mugen, wani yaro da ke da “galaxy pass”. Don haka, wani kasada mai nuna tseren sararin samaniya tsakanin 'yan fashin teku da wani saurayi ya fara.
