Mankind has developed superpowers known as "Quirks" with 80% of the population having some kind of superpower. These new abilities see the rise of both superheroes and villains. A prestigious school known as the The Hero Academy trains superpowered hopefuls into the heroes the world needs.
Middle school student Izuku Midoriya wants to be a hero more than anything, but he's part the 20% without a Quirk. Unwilling to give up his dream, he plans to take the exam and be accepted into a high school for budding heroes. Through a series of serendipitous events, he catches the eye of the greatest hero, All Might, who agrees to train him.