One Punch Man 3

Saitama, who started his journey as a Hero, has gained incredible strength after three years of Special Training. Now he can beat enemies with just one punch. Saitama is serving as the official hero of the Hero Association along with his loyal fellow, Genos.

Trouble starts when monsters of the Monster Association come out to kidnap the child of the Hero Association’s executive. The top S-class heroes decide to attack the monsters’ hideout to rescue captives. While Garou, a human monster, was taken by the monsters, he suddenly woke up in their place.