"Arthur e o Infinito - Um Olhar Sobre o Autismo" (Arthur and the Infinite - A Look Into Autism) is a Brazilian film that tells the story of a six-years-old boy that is diagnosed as autistic. As the family reacts to the circumstances, Arthur's mother seeks ways to better understand his life.

The children are invited by a Brazilian music star to one of his shows. But the trip turns into a nightmare when the villains Gonzales and Gonzalito, recently released from prison, decide to kidnap Maria Joaquina.