It is pure fantasy, ala an 8 bit rpg game. There are a few mini games, although the main one doesn’t quiet get finished by the time the demo ends, as you have to look for a character’s mother.
There is another where you have to find another character’s cat, but that is only at the beginning of the mini game before the demo ends.
You are basically travellers searching for adventure, and learn of a magical sword that could defeat an evil ogre. Once the ogre is beat you can END the game prematurely as this is where the tutorial finished, or continue on and learn that there are three other swords, in three other areas you must collect to duel the ultimate evil.