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.
All citizens are asked to
stay out of the area.
.جميع المدنيّين مطالبون بالبقاء خارج المنطقة
Ich bitte alle Anwohner,
dem Konfliktherd fernzubleiben.
I cittadini sono pregati di non
avvicinarsi per nessun motivo.