A very nice emotional story of the bondage between father and son. A story of how a father cherishes his son to keep looking for possibilities. The story where the father dies in the 9/11 disaster. The boy over come with misery lays low for a year and then he explores his dads things and finds out a key. He takes it his mission to find out what his dad's key meant to show him and starts searching for the lock that fits the key. On his pursuit he meets a lot of people whom he gets to know and has to cope up with. Whether the boy finds the answer to his father's riddle is the story. As already said nice, emotional, and beautifully portrayed.
IMDB: http://www.imdb.com/title/tt0477302/
Trailer: