While on the road to their field trip, Class 2-C's bus is enveloped in light, and the Goddess, Vicius, summons the students and their teacher to another world. The Goddess hopes to raise them as Heroes to defeat the Great Demon Empire, and she welcomes the students after appraising their abilities with her crystal. However, Mimori Touka is appraised as an E-Class, the lowest rank... and he's branded a trash hero.
You want us to be your "heroes of salvation," 
but I can't see how we have the power to help.
‫لربما تطلبين منا فجأة أن نكون أبطال خلاصكم،
Wie sollen wir plötzlich
Heil bringende Helden sein?
Nos pides que seamos héroes salvadores,
Nos pides que seamos héroes salvadores,
alors ce titre de « héros salvateurs »,
je doute qu’il soit cohérent et que nous…
Anche se lei ora dice
che siamo degli eroi, dei salvatori...
Você pode estar nos pedindo para sermos
seus Heróis da Salvação logo de cara,
Пусть вы нас и называете
героями-спасителями,