With his own motor yacht, "Sea Fox", former naval officer Philip Vivian sets out on a profitable - if legally dubious - adventure, proposed to him by an old comrade-in-arms. But he soon finds himself trapped in a treacherous web of violence and crime.

With his own motor yacht, "Sea Fox", former naval officer Philip Vivian sets out on a profitable - if legally dubious - adventure, proposed to him by an old comrade-in-arms. But he soon finds himself trapped in a treacherous web of violence and crime.