After Leah loses her family in a fire, she arrives at an orphanage. Which apparently, isn't an orphanage at all. But a secret agency for assassins. After the urge to take revenge takes over she becomes the agency's best. And they think it's time for her first real mission, where she goes undercover with a partner. And this would all be fine, if the urge to kill the arsonist of the fire that killed her family wasn't so strong, and the arsonist, wasn't so close.
And what will happen when her whole perception on the fire changes?
Her revenge might too.