Okay, let me put in the general plot synopsis
Ben is a ten year old child who has been separated from his sister since the age of 2. He lives with his adoptive mother, and his life shows almost no trace of his past family. His only ties to his old family were a photograph, and a song.
Then his life changes - he finds that Rodriguez, his best friend, is moving away. And taking his place was a girl named Jade, who was confined to a wheelchair. Though at first he didn't like her very much, he begun to discover more about her past. She had been through a lot more than he thought she was. She, like him, showed a longing for a sibling, a brother or sister. She could sing very well.
And she knew the song that his old mom had taught him. He believed he found his sister, until he discovered that Jade was handicapped since birth. His sister was standing in the photograph that he had. It was evident that they had been wrong.
While he digested this sudden shock, he decided that he would keep pretending as if he was Jade's brother, knowing how it feels to long so badly for a sibling - a family. They then discovered others who needed a family, too. They discovered that Sean, the bully who has bullied them so badly, was an orphan who was in turn bullied by his older "housemates" in his foster home. Ben finds a piece of maple leaf in Sean's room.
He immediately suspects that Sean is Jade's brother, even though he is not sure. But asking Jade about it would mean revealing what he has been doing all along - keeping a white lie. He struggles with this dilemma, until he decides that he cannot let Jade remain ignorant any longer. It is time for them to find her REAL family.
When he finally musters the courage to tell Jade, he finds, to his surprise, that Jade has been doing the same to him all along - she knew she was not Ben's sister, but she decided to pretend, to keep him happy. She reveals that she had kept a piece of maple leaf that her brother has left her. Ben knew immediately that Sean was her brother.
There remained only one more mystery. How did Jade know his song, when only his old family could've taught her? Jade shows her a tape she had from her days in the orphanage. In the tape, some twenty orphans were all singing The Song. And standing in the middle was Ben's sister. Jade tells him that when his sister was teaching them the song, she said, "I only teach this song to those in my family." Jade tells him that she no longer knows where Ben's sister is, but Ben concludes with saying that it no longer mattered anymore. He thought about the twenty children, all with different skin, different hair color, different eyes, all different in appearance. All singing the Song. And he realizes that it no longer matters whether he finds his "real" family or not, for everyone around him was his family.
Sorry if my grammar wasn't too good - I had to type that out in a short amount of time.
