1793: the onset of Britain's conflict with Revolutionary France. Ex-captain turned privateer, Harry Ludlow finds himself on board the naval 74-gun Magnanime, with his brother James. In command is Oliver Carter, a captain with whom Harry has an unfortunate history. But when James is found standing over the body of a dead officer, old scores appear to be put aside…at least for the time being. Blinded by his own prejudice, Harry sets out to prove his brother's innocence, but it is soon apparent that his feud with Carter is not the only dark secret aboard the Magnanime.