After Chidori Yoshino from Strega kidnaps Junpei Iori at the end of autumn, the Arcana Hanged Man is triumphed over by the Specialized Extracurricular Execution Squad (SEES) led by Makoto Yuuki. Soon after, the mysterious Ryouji Mochizuki enrolls as a new student in Class 2-F at Gekkoukan High School. SEES is under the impression that they have completed their mission and can finally take a break from the brutal battle that resulted in the loss of their loved ones. However, even after the defeat of the twelfth Shadow, Tartarus and the Dark Hour persist, leading SEES to feel discouraged and unsure of their purpose. As Junpei and Makoto seek their identities, SEES must come face-to-face with their inner demons and comprehend why they fight. At the same time, Aegis harbors resentment towards Ryouji, whose true identity is ultimately uncovered.