In a world difficult to comprehend, Nathan struggles to connect with those around him – most of all his loving mother – but finds comfort in numbers. When Nathan is taken under the wing of unconventional and anarchic teacher, Mr. Humphreys, the pair forge an unusual friendship and Nathan’s talents win him a place on the UK team at the International Mathematics Olympiad. From suburban England to bustling Taipei and back again, this original and heart-warming film tracks the funny and complex relationships that Nathan builds, as he is confronted by the irrational nature of love.