This book follows the thrilling adventures of a brave and strategic naval officer during the Napoleonic Wars. The protagonist is placed in charge of the 'Atropos', the smallest ship in the Navy's fleet, where he must navigate a series of challenging missions, including the recovery of treasure from the bottom of the Mediterranean Sea. The story also chronicles his return to England, where he must deal with a mutinous crew and the challenges of commanding a ship of the line. The protagonist's courage, intelligence, and leadership are tested at every turn, making for an exciting and captivating read.

The book chronicles the harrowing adventures of Alonso Ramírez, a Puerto Rican man who, after being forced into piracy, endures a series of calamitous events at sea and across various lands. Captured by pirates, he survives shipwrecks, enslavement, and numerous hardships before eventually making his way back to Spanish territory. His story, which is presented as a true account, blurs the lines between fact and fiction, offering a unique perspective on colonial life, maritime culture, and the struggles of individuals caught between different worlds during the late 17th century.