A pack of monsters calling themselves the "Clan of the Seafolk" arrive on the shores of City J intent on invading the land. When the hero sent to fight them is defeated easily by the Deep Sea King himself, Saitama and Genos head for the city to help.
Anyone who needs a new blowhole
drilled into their torso, step right up!
!أيّ من يحتاج ثقبًا جليديًّا في جسمه فليتقدّم
Greif mich doch an,
wenn du ein großes Loch im Bauch willst!
Tu veux que je te fasse un gros trou ?
Eh ben amène-toi !
Vi scavo un bella galleria nel petto!