The last movie of Robert Redford entailed a wave's appearance of "whisperers", kind of trainers who consider the animal's psychology. This documentary intends to explain clearly the "whisperer""˜s method meeting successively 4 trainers: Monty Roberts, Doctor Robert Miller, Tom Dorrance, Pat Parelli. These pioneers, through their practice, their speech and thanks to their discoverings about the horse, all refer to a scientific discipline, the Ethology, which studies the animal's behaviour in natural environment.