Mikami Satoru, a businessman, is stabbed by a criminal on the street and killed. When he regains consciousness in the darkness, he finds that he's been reincarnated as a slime! With nothing better to do, he spends his time devouring all the rare herbs and precious ores he comes across. As he does, he encounters the Storm Dragon Veldora, who was sealed in this cave 300 years ago by a hero's "Unlimited Imprisonment" skill. He's frightened at first, but as they talk, he becomes friends with the long-isolated Veldora.
I get it. This cave must 
be full of that stuff,
،فهمت. لا بدّ وأن هذا الكهف مليء بتلك الأشياء
Ich verstehe.
Und diese Höhle ist voll davon.
Ya veo. Esta cueva
debe estar llena de eso
Ya veo. Esta cueva
debe estar llena de eso
Si j’ai bien suivi,
cette grotte en est remplie,
Capisco.
Entendi. Esta caverna
está repleta disso,
Понятно, получается в этой пещере
растёт полным-полно полезных трав?