Light Sail Academy, known as the Devil's Middle School, has countless top graduates every year. However, the school is lifeless. There are only two types of students, one is studying all the time, and the other is training all the time. Two high school students who had just arrived tried to set up a student club in the college, but they encountered a lot of resistance. In the second semester of their sophomore year in high school, they finally found like-minded companions, adding bright colors to their youth in the last days of their high school careers. And behind each of them, there seems to be an unknown secret hidden. How should the four girls choose in the face of youth, reality, passion, and interests?