Allison Walker had been trained to kill monsters from the age of four. Being taught by her father, the famous hunter Daryl Walker, Allison grew up being a very skilled hunter. At the age of five her mother was killed by the powerful demon, Azazel. Which drove Allison's father thirsty for revenge and trained Allison like a soldier. Now Allison, at the age of 24, travels alone, killing anything that bumps in the night. When she bumps into the Winchesters her life will be turned upside down. New information about herself will be brought out into light. Can she handle it or is it too much?