This movie is not credible on a psychological level. Sam/Ben was too well-adjusted, too articulate, and too mature for his age. Any kid in real life would not be expected to abruptly pack his bag and leave his home behind. He would not have been able to psychologically heal--never mind forgive--his older brother. It would have taken years of therapy for the family to come together as a family. Basically, this is an escapist, feel-good movie with competent enough acting.