Dark Crystal

I can't remember who I was ,but the only thing I remember is I was once a human and my name is Summer. The rest is a blur and I can't help it ,but to feel something big is going to happen. Why does fear build up in my stomach whenever I hear the word 'Crystals'? Who is the voice talking in my head? Why can't I remember? And most importantly who am I? I don't own pokemon! Crossover between Pokemon rangers and Mystery Dungeon games.