After completing the "End-of-Year Special Exam" of their second year, Horikita and her former 1st-year Class D classmates now enter their 3rd year in Class A. However, the biggest contributor to their success, Ayanokōji Kiyotaka, ended up transferring to another class. The students of Horikita's class are thrown into confusion and chaos, but there is one cruel truth they must face: unless they defeat 'Ayanokōji Kiyotaka,' they cannot graduate as Class A. As Ryūen and Class B show signs of growth, and new connections form between Ayanokōji's Class C and Ichinose's Class D, the first special exam of the third year, the "Comprehensive Academic Ability Test: Overall and Minority Battle" is announced! Only one class can graduate as Class A. Which class will rise to the top? The long-awaited "Third Year Arc" begins!