In the exclusive world of horse racing, Alec MacKenna is known as a hardheaded trainer who cares more for an animal's welfare than the financial bottom line. After a public altercation with a callous owner leaves his career on the brink of ruin, Alec's only chance for redemption is Legends Lake, a thoroughbred with Triple Crown potential and a dangerous problem that could end both of their careers. Alec escorts the colt from the bluegrass hills of Kentucky to the emeralds pastures of Ireland to meet the woman who bred him, in hopes that she may have the answers that will save them. Kate O'Sullivan is happy to see her beloved horse come home, even under such disturbing circumstances. In spite of the irascible Yank who came with him, she has the feeling that something in her life is about to change forever. As Alec and Kate work to unravel the mystery of Legends Lake, they discover their shared concern for the troubled racehorse could turn into something extraordinary for each other.