A socially awkward teenage math prodigy finds new confidence and new friendships when he lands a spot on the British squad at the International Mathematics Olympiad.

Asa Butterfield

Nathan Ellis

Rafe Spall

Martin Humphreys

Sally Hawkins

Julie Ellis

Eddie Marsan

Richard

Jo Yang

Zhang Mei

Alex Lawther

Isaac Cooper

Alexa Davies

Rebecca Dunn

Martin McCann

Michael Ellis

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