Someone is out on the run before he becomes the fourth one to be hunted down

From the distant stars, nine of them escape to Earth to seek refuge, though not for long. One by one, they were hunted down: the first one in Malaysia, the second one in England, the third one in Kenya. The fourth one, however, was determined to survive and was continually on the run. He tried to live a normal life, meeting love along the way.

I am Number Four movie trailer HD

Later on he discovers he has a hidden power, something that may well change his life, as he would use it to battle those who seek to get rid of him.