A sexually active grandmother has an affair with a married man when she attends her adult son’s wedding. Later, she meets her lover’s grown-up son and accepts his invitation, on behalf of herself and her granddaughter, to sail on his luxurious yacht. The h feels very uncomfortable with the situation and tries to avoid the H, who finds her reaction to her grandmother’s affairs prudish.
Meanwhile, the h is half-enamored with the hero’s French friend, when Stratton decides to kill the crew and leave only the h, the H, and the OM stranded. The grandmother is eventually saved.
The tone of the story shifts and becomes somewhat sinister, as the OM reveals himself to be a stalkerish psychopath.