A young maths genius sees logic thwarted by one truly baffling equation: love. Teenage maths prodigy Nathan (Asa Butterfield) 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. And when Nathan is taken under the wing of unconventional and anarchic teacher, Mr. Humphreys (Rafe Spall), the pair forge an unusual friendship.
A look at the lives and interactions of a group of friends living in New York.