X+Y

A young maths genius has his logic thwarted by the one thing he can't make sense of - love.Teenage maths prodigy Nathan struggles with people, not least his mother, Julie, but finds comfort in numbers. Mentored by unconventional and anarchic teacher Mr Humphreys, Nathan's talents win him a place representing GB at the International Mathematics Olympiad. When the team go to train in Taiwan, headed up by squad leader Richard, Nathan is faced with unexpected challenges - not least his new and unfamiliar feelings for his Chinese counterpart, the beautiful Zhang Mei.