Setsuna Kiyoura is a typical high school student enjoying the summer break off from school with her family and peers. When her close friend, Sekai Saionji, falls bedridden with a common cold and is unable to attend to her part-time waitress job at Radish, the family restaurant, Setsuna opts to fill-in until Sekai is better. Although she comes to find the job is a little more demanding and stressful than expected, she befriends a handful of acquaintances at work, becoming particularly infatuated with fellow student and patron Makoto Itou.