College student Iwatani Naofumi is reading a book titled "The Records of the Four Cardinal Weapons" in the library when he is suddenly summoned to another world and told he has to save the world as the Shield Hero, one of the Four Cardinal Heroes. And one morning, he finds all his money and equipment gone.
The shield... It's all 
about the shield again?
التّرس... يتحدّثون عن التّرس من جديد؟
¿Otra vez el escudo?
¿Otra vez el escudo?
Encore cette histoire de bouclier ?
Lo scudo... È di nuovo colpa dello scudo?!
Escudo... De novo esse negócio de escudo?
Щита?!