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.

Top Cast

Asa ButterfieldNathan Ellis

Rafe SpallMartin Humphreys

Sally HawkinsJulie Ellis

Eddie MarsanRichard

Jo YangZhang Mei

Alex LawtherIsaac Cooper

Alexa DaviesRebecca Dunn

Martin McCannMichael Ellis