Shell-shocked after losing a foot during his tour in Afghanistan, Captain Tom Forsyth returns to the house of his estranged mother, who always put horses first and family last. 

Nicholas "Foxy" Foxton, a former jockey, is out for a day at the Grand National races when his friend and co-worker Herb Kovak is murdered, execution style, right in front of him --- and 60,000 other potential witnesses. As he struggles to come to terms with Kovak's seemingly inexplicable death, Foxton begins to question everything, from how well he knew his friend to how much he understands his employer.