1960s. Arden is an introvert kid who was brought up in a strict Catholic orphanage. Insecure about his voice, he pretends to sing during choir practice. With the arrival of Mr. Stevens, the new music teacher, his farce is discovered and the duo starts to work together. As the boy becomes more confident with his singing, a friendship is formed. But a stern Mother Superior notices changes in Arden's behavior and, concerned with his attachment to the teacher, breaks them apart. Abandoned once more in his life, Arden will struggle to find his own voice.

A cancer survivor, an amputee, several immigrants, and many others are snatched from a Los Angeles street and forced to take part in a deadly race.