I was thinking a remake of What Dreams May Come but instead of Robin Williams it is a horse and he is trying to find his jockey who was cast into hell after the horse killed him by a lack of concentration in a race (he was staring into the vagina of the horse in front of him.) They rescue the jockey (played by Kieran Culkin) and the horse, the jockey and the hot-vaginaed horse end the movie by drinking sweet tea on a porch in Kentucky. (Morgan Freeman is their gardener) The End.