Equine veterinary technician Walter Watson was working in a prestigious practice in Colts Neck, New Jersey when he makes a terrible discovery. His boss, famed equine surgeon Dr. John Hansen, is involved with a group of men committing a multimillion-dollar fraud killing racehorses in order to collect insurance money. Just before Walter can expose the scam, he is murdered. However, he is reincarnated as a thoroughbred racehorse colt.

A memory thrashes its way to the surface, torturing him, refusing to let him rest—the knowledge that he once was a man. He knows he must expose the crimes that haunt him as he enters training and racing in pursuit of men's fortunes. He will not be alone in his quest. Merlin, a black barn cat who was once a homicide detective, will see to that. He is also assisted by famous animal psychic, Sally Andrews, and her private investigator friend, Chris Mackenzie.