Hachiman Hikigaya returns to the Service Club at his teacher Shizuka Hiratsuka's urging to help keep the school prom from being cancelled. Pulling the event together strains the uneasy truce between Hachiman, Yukino Yukinoshita, and Yui Yuigahama, as each struggles to say what they actually want from the others. This third and final season resolves the relationships the Service Club has been circling since its founding.