What is this place? Who am I? What am I? Can anyone help me?

Waking up with amnesia and a strange yet familiar body, she finds herself lost inside an unfamiliar world. Her past unknown, she must try to figure out the importance of her scars and the pendant around her neck. And the woman in White she woke up with who knows too much and yet too little may be able to help her find her past. But is that a good thing?