Demons from the past, Alien hope for the future

(rated m ignore the pg-13 please) Rico Davids is the leader of an elite special operations team called Slayers they are often referred by some to be the best. But on a mission to save an old friend that is not so human he finds that some demons from his past are toying with things they can't begin to understand and now it's up to the Slayers and some unexpected allies to stop them. (Warning their will Profanity, brief nudity, and other thing young kids shouldn't hear read or see)