The plot involves The Prince and his father The King of All Cosmos rolling around an object known as the Katamari to create Stars. In the first volume, how to roll the Katamari and introduction to the story takes place. In the second volume, The Prince fills up the sky with constellations. The third volume introduces The Prince's various cousins and the trouble they get into. In the fourth and final volume, The Prince rolls The Moon into the sky and the ending takes place. There are five chapters in each volume, each of a moderate length.