Kino, his wife Juana, and their baby son Coyotito, live a simple life in an ocean-side village in Mexico. Kino pearl-dives for a living. He and his family are native people of the original Aztec stock. Life for them is not perfect, indeed, the injustice of subjugation to the Spanish sometimes burns fierce in their hearts, but much of the time their existance in their small brush hut is sweet. Then one day Kino brings to the surface a huge pearl, a perfect pearl, "the Pearl of the World". This discovery promises many changes to the better, and it seems Kino's every dream will be fulfilled, but as news of the find spreads the forces of evil stir as greed and malice build.

In this novella Steinbeck uses simple language to create some of the atmosphere of a folk-tale. He has, however, combined this atmosphere with the character development and dynamism of plot expected of a modern work. At its worst this book is predictable. Virtually from the start of the story I was able to predict generally how the plot would turn out. Steinbeck's own narration, indeed, more than hints at what the future holds. But the success of this novella is in the working out of the details of the plot. Steinbeck manages to surprise us again and again with dramatic plot twists and exciting developments. I certainly cannot say I was bored by this book. It entertained me, while at the same time making a 'moral' point.