Blood Lust [Larry Stylinson AU]

In the Elite League of Assassins, power is everything -- and that's exactly what second-class assassins Louis and Harry need in order to restore peace to the world. Their mentor, Zayn, has given them a mission that seems virtually impossible. With the new recruit Niall, fellow team mate Lizzie and Dr. Payne's son, Liam at their side, they're going to try their best to destroy the new empire that is slowly taking over North America, and then -- the world. The fate of the entire human race lies within their hands, but somewhere along the way, love, betrayal, and hatred get in the way. Harry is falling for Louis -- hard. Louis is too focused on the mission ahead to return Harry's feelings, which sends Harry into a state of depression. Will they be able to save the human race when they can't even save themselves from their own feelings?