Is the school maneuvering behind the scenes to expel a student? A smoking commotion has engulfed the students in Shizu's (Hirose Alice) class! Due to the schemes of Moriguchi (Ito Atsushi), who is pushing for school reform, Hina (Kiyono Asahime) and Mai (Matsumoto Reise) are placed under house arrest, while only Ayaka (Toyoshima Hana), who is on the "forced expulsion list," is expelled...! The students explode with discontent at the unequal treatment! As Moriguchi's maneuvering closes in, Shizu's hidden past also comes to light. Will Shizu be able to respond to the feelings of her students and save them?