A sci-fi story about Captain Momo, a woman on board the space freighter Blue Chateau. She is alone on the 500-day one-way journey, accompanied by a cat, when she realizes that the electronic replication range that converts electrical energy into food can replicate non-food items as long as it has the data. The story depicts the freewheeling life of Captain Momo, who spends most of her time naked because she lives on a spaceship all by herself, and the serious troubles that occur during such a life.