Port Mahon, 1800. Newly promoted Jack Aubrey receives command of the small sloop Sophie and recruits physician and naturalist Stephen Maturin as surgeon. Their friendship develops as Jack learns independent command and Stephen adjusts to naval life.
Cruising against French and Spanish shipping, Sophie takes prizes and attempts an audacious attack on a much larger enemy vessel. Success brings money and reputation, but Admiralty politics and a French squadron show how quickly a young commander’s fortunes can change.