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 don't know what your world was like,
،لا أعرف طبيعة عالمك بالضبط
Ich weiß nicht,
wie es in deiner Welt war, …
No sé cómo era tu mundo,
No sé cómo era tu mundo,
J’ignore
comment ton monde fonctionne,
Non so come le cose funzionassero 
nel mondo in cui vivevi,
Não sei como era em seu mundo,
Не знаю, как там в твоём мире,