Harry is an alien that has crash landed on Earth with a mission to kill all humans. He decides to pass himself off as a small-town doctor to mix in among the people, living a typical life.
Things get tricky, though, when he gets pulled into solving a local murder and realizes he needs to assimilate further into his new surroundings. As he does this, Harry starts to wrestle with the moral dilemma of his mission and begins wondering if humans might be worth saving.
Based on the Dark Horse comic.