It’s the most extreme race on earth: a contest with 250 million competitors, only one winner and numerous obstacles thrown in for good measure. Helicopter-mounted cameras, world-renowned scientists, computer imagery and dramatic reconstruction bring to life the extraordinary journey of sperm – from ejaculation to egg – scaled up to human size and with the sperm played by real people. Taking place in some of the world’s most striking landscapes to illustrate the stages of the process, The Great Sperm Race follows the extraordinary twists and turns of the journey from conception to fertilisation.