>>58473070MC(human) gets transported for whatever reason to a world with only pokemon. Then they meet their parter/deutoragonist shortly after and quickly enter a dungueon to usually save some kid or retrieve an item.
Then the duo join the guild/society that's made to delve into Mystery Dungeon.
Throughout the story, themes of great friendship are a center.
The villain(ous) tends to be on a worldwide/globa; scale and usually gave to do with a lack of love or some sort of bitterness.
All of these elements, while not bad, tend to be stale after the third story. And often aren't that well written (not atrocious, just not good enough for longterm engagement.)
