The Black Balloon (2008)

When Thomas and his family move to a new home and he has to start at a new school, all he wants is to fit in. When his pregnant mother has to take things easy, his father Simon puts him in charge of his autistic older brother Charlie. Thomas, with the help of his new girlfriend Jackie, faces his biggest challenge yet. Charlie's unusual antics take Thomas on an emotional journey that causes his pent-up frustrations about his brother to pour out - in a story that is funny, confronting, and ultimately heart-warming.