Bull mysteriously returns home after a 10 year absence to seek revenge on those who double crossed him all those years ago.

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, Nathan builds complex relationships as he is confronted by the...