A new school year begins at Hanzaki Elementary School, and there's a new mysterious teacher named Akutsu Maya in grade 6, class 3. Meanwhile, Kanda Kazumi is now entering the 6th grade and is filled with excitement about the new school year. Kazumi also has Maya Akutsu as her new homeroom teacher. The students in grade 6, class 3 quickly realize that Maya never smiles at them and treats them mercilessly. Students are not even allowed to use the bathroom during class time. Maya places a high emphasis on test scores and gives pop quizzes every week. Students who receive the lowest scores become almost like slaves as they must perform odd jobs in the classroom. Kazumi quickly falls into the crosshairs of Maya. A 1-year battle then ensues between Maya, who rules her classroom like a queen, and the students of grade 6, class 3.