A crab monster was destroying town. Saitama, a failed buisness worker was walking home from an interview. The crab monster came up to Saitama and laughed, he liked the emotionless face on Saitama. The crab monster was thinking of killing Saitama later on, but right now he was looking for a big chinned brat who drew pecks on him. Saitama walked past a boy with a big chin, playing with a ball. Saitama thought of saving him but he thought not. The crab monster showed up and tryed to destroy the kid. Luckily, Saitama came to his senses and saved the kid from danger. He told the monster about his childhood, wanting to be a hero who could destroy monsters with one punch. The crab monster beat Saitama up at first. Saitama started to get the hang of it and remembered how crabs would be eaten. Saitama pulled the crab monster's eye and all the guts spilled out.
