Shihori and Natsumi have been appointed as the heads of the daytime and evening school programs. Their daily lives at the school, interacting with students of various ages and backgrounds, prove far more complex and challenging than they anticipated. One day, a student from the daytime program reports a stolen wallet, leading to suspicion falling on the evening school students, and the class quickly spirals toward collapse. However, Shihori and Natsumi confront the situation honestly with their students and work together to overcome the crisis. As winter break approaches, the students begin visiting the two teachers. In their actions, signs of new learning and personal growth begin to emerge.