Mistress Sidonia brings her slave for some advance pony training and shoulder riding with the experienced jockey and trainer Mistress T. She has very exacting standards and puts him through a tough session until he is broken and has no more to give. This merits a punishment from both ladies, they proceed to reduce him to the status of a pig, pushing his face into the mud, trampling and spitting on his wet body, as befits his new role.