John (Alex Pettyfer) is part of an alien race that lives on Earth. There is a sequential order of these aliens that are special. One through three have been killed. He is number four. Having to move from city to city to hide from the enemy he settles in Paradise, Oh. He falls for Sarah (Glee's Dianna Agron) who is looking nice. It ends with a huge battle scene and sets up for a possible franchise.
This movie is actually pretty good. I had moderate expectations and was not disappointed. Pettyfer is not very good. Not sure that he's got the chops to be a leading man. Overall it's a fun movie. Not great, but I wouldn't mind seeing a sequel.