A Payment For that which is Priceless

"Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is Alchemy's First Law of Equivalent Exchange." Alex A bounty hunter sent by the state to take down scar manages to save a Chimera named Nina little does he know that Nina will send this bounty hunter on a path that crosses with the Fullmetal Alchemist.