Being the only girl who can see wings on the back of a mysterious guy- who turns out to be a fallen angel- from an incedent, Alex Makes a deal with him. Eques, the fallen one needs her help to find his scattered memory fragments- from the shape of black feathers to seek through his past, in return he will grant Alex a wish. But will things turn out the way they think? Or will deep secrets that dwells within the memories drive them through a dead end?