The National Jockey Club is worried: at the races, horses with obvious signs of doping are winning more and more often, yet no examination can detect it. Convinced that neither the police nor a private investigation has led anywhere, the club’s leadership clings to their last hope. While traveling on business in Australia, Count October invites young stud breeder Daniel Rock to secretly come to England and, posing as an ordinary horse keeper, uncover the technique behind this amazing doping and identify the people who provide it to the horses. But will Rock manage to accomplish his goal while staying alive?