A girl who is a member of her school's space yacht club and has a part time job as a waitress in a maid café. She learns one day about her recently deceased father, Gonzaemon Kato, who was a Space Pirate. As Gonzaemon's only descendant, she is chosen to become the new captain of the Bentenmaru. After joining her parents' former crew, she starts dividing her time between her studies, her part-time job and her duties ahead of the Bentenmaru. It does not take long for her crewmates to confirm that Marika has what it takes to live up to her father's legacy.