In my world the characters find themselves in a new land. They do not understand the locals nor do the locals understand them. How could these characters learn to understand the locals withing a month or two considering neither have ever had touch with each other's laungage?
I've thought of the locals having a certain herbal preparation that alters the brain making it able to understand them, but how would that actually go about?
It is also worth mentioning that the locals of this place posses a certain alien artifact, could it hold a power to make them understand each other and, if so, how would it do it?
Would it be possible for the characters to just learn the new laungage just by being among the locals for a longer period of time? Is something like that plausible?