As the space yacht club heads up to the relay station to do some spring cleaning on the Odette II, Marika, who is a little sleep depraved from exams, decides to give the Bentenmaru a bit of a cleanup too. During the second day of cleaning, Marika unknowingly loses the ID ring she got from Gruier on the Odette, which she only realises this when the Bentenmaru crew are finally discharged and find themselves locked out of the bridge. Thankfully, Grunhilde manages to find it and, with help from the space yacht club, manages to get the Bentenmaru up and running again. As Marika retreats to the Bentenmaru's Captain's room after all the cleaning is done, she starts to learn how to make her mother's pot-au-feu.