"Hero hunter Gato intensifies his onslaught, so of course Saitama decides now is the perfect time to join a combat tournament. Meanwhile, Class-S hero Metal Bat takes an assignment guarding a Hero Association executive and his son, and before long trouble appears!" -- provided by publisher. "What happens when a superhero can beat the snot out of every villain with just one punch? Can he find an opponent to give his life meaning, or is he doomed to...