Rich and cultivated trio, Elena, Richard and Trix, are on board a luxury yacht in the Caribbean when a strange tropical storm envelops them - then releases them into a world of calm waters, galleons, pirates and a world of slavery.
The storm has catapulted them into Altantis, where outsiders are used as slaves in every respect, from bed to transport, where Atlantean life is good and slaves are there to make it even better, under pain of severe punishment.
Elena relates the story of her strange slavery, of the pony carting training, the many ways the ponies are used by both men and women alike, what she herself is made to endure to satisfy the Atlanteans' sadistic cravings and the public punishments she witnesses for recalcitrant slaves.
The Atlanteans are sadistic people indeed!