Jan-di is an average high school girl whose parents operate a Laundromat. One day she delivers laundry to Shin-hwa high school, where the top 1{f0a6bf52e9e178bc0f36a3089cff5dcb10d8d5908e07528f0145d273684914b3} of the wealthy children gets to go, and accidentally saves a student from a suicidal attempt. After this incident, she is scouted to this prestigious school as a swimming athlete.