When jockey Chris Kirby (Fred Johnson) is fatally injured in a horse race, he gets his best friend, gambler Adam Black (Stewart Granger), to promise to take care of his teenage daughter, Evelyne (Jean Simmons), who has been raised apart from her father. Unbeknownst to Adam, Evelyne had been led to believe that Adam is her father in correspondence between parent and child. Adam is unable to tell her the truth; his butler and friend Bill Murray (Edwin Styles) tries and fails as well.