Pokemon Mystery Dungeon - Explorers of Sky: Part 27: There's No Place Like Home

What happened? Why did I suddenly turn into a Pokemon? Maybe I'll get the answers I'm looking for if I play through Pokemon Mystery Dungeon: Explorers of Sky for the Nintendo DS.
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When a human who has been transformed into a Squirtle wakes up on a beach with no memory of how it happened to her in the first place, a timid Chimchar approaches her and asks if she wants to form a exploration team with him after he has a precious treasure stolen
from him.
And from there, treasure, thrills and mystery surround our amnesiac protagonist as she searches for answers to help her understand why she was sent into the world of Pokemon in the first place.