I love it. The plot is this:
One day, you wake up as a pokemon with no memory of the human world. You meet another pokemon who becomes a close friend and form a rescue team. You rescue other pokemon and go on great journey's through dungeons.
Instead of catching pokemon, you recruit them. When you defeat them, sometimes they want to join you. It gives you plenty of information how to play in the game, so I'll just say that I would definatley recommend this game.