This is a world where humans naturally have superpowers called "Quiz". Izuku Midoriya, a "Quiz-less" boy known as "Benku", meets his idol, the No. 1 hero All Might, who discovers Midoriya's hidden heroic qualities and inherits his "Quiz" OneForAll from All Might. Benku enters the prestigious high school, U.E. High School, where many heroes are born. With the goal of becoming a hero who saves society and people with his "Quiz", he and his classmates spend every day full of trials. Although he defeated his nemesis All For One, All Might also exhausted his strength and retired from professional heroism. Benku inherited his will and obtained the "Professional Hero Provisional License", which brought him one step closer to being the "best hero". At this time, Benku met Misao Tsuchigata, a third-year student who was doing an off-campus internship under the professional hero Sir Nighteye, one of the three giants of U.E. His overwhelming strength made Benku even more eager to participate in an off-campus internship at the professional hero office where he could truly carry out heroic activities. Meanwhile, the young leader of the restless Villain group, the Death Hachisaikai, comes into contact with the leader of the enemy Villain coalition, Tomura Shigaraki, who has inherited the will of AllForOne. Afterwards, a young girl appears next to the repairman. Deku and the hero candidates are about to fight a new "threat", and a new "mission" challenge begins! !