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.
There are occasionally those who 
come here from other worlds,
،يأتي آخرون أحياناً إلى هنا من عوالم أخرى
Hay quienes vienen de otros mundos,
Hay quienes vienen de otros mundos,
Certains viennent
d’un autre monde,
Talvolta, capita che arrivino qui
esseri da altri mondi.
Ocasionalmente aparecem
seres vindos de outros mundos,
Гости из иного мира у нас встречаются,