Pokemon Mystery Dungeon Stardust

What would you do if one day you woke up without any memories. And on top of that, you're a Pokémon! Join a young human turned Riolu as he struggles to deal with his new life as a Pokémon and attempts to discover why he was brought to this world. Will he succeed, or will he be consumed by darkness. I do not own Pokémon or any song, book, show, movie, etc. that I reference.