Aliens and their guardians are hiding on Earth from intergalactic bounty hunters, they can only be killed in numerical order and Number Four is next on the list. This is his story.
This barely made the 3 Stars but did because of the Mogadorians and their beasts (the bad guys who are really over the top but damn good to watch). Number Four has been hiding for years with his over protective guardian (played by the brilliant Timothy Olyphant from Hitman, Justified etc...). The movie starts with the death of Number Three and then continues with teen angst and moody teenager bullshit as Number Four rebels against his life and lack of information about his former homeworld, his developing powers (very useful), love, high school and over protective guardians.
The CGI is good, the Mogadorians are great, the action isn't too bad when it happens and is worth a watch but really very little else to recommend other than watching it once with a big bowl of buttered popcorn and also beware of cute dogs but not of Number Six.