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.