Teenage maths prodigy Nathan (Asa Butterfield), diagnosed at an early age as being on the autistic spectrum, struggles when it comes to building relationships with other people, not least with his mother, Julie (Sally Hawkins). In a world difficult to comprehend, he finds comfort in numbers. When Nathan is taken under the wing of unconventional and anarchic teacher, Mr. Humphreys (Rafe Spall), the pair forge an unusual friendship. Event..
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