The novella takes place in a remote seaside village where a young family of three live: Kino, Juana, and their infant son, Coyotito. Although they are poor, the family lives a relatively happy life until one day, Coyotito is bitten by a scorpion and his life is threatened. His parents take him to the doctor; however, they are turned away because they do not have payment for his treatment. To remedy this, his father Kino takes their canoe out in search of a pearl that he can sell to pay the doctor.
At home, Juana prays that her husband will find a pearl bigger than any other and her prayers are answered. Kino finds such a large pearl that it attracts attention from all of the villagers. With this large pearl he begins to dream and brag about what he will do with the money. Eventually, the doctor returns and treats Coyotito, and says he will return in an hour. In the meantime, Coyotito grows more ill, prompting Kino to bury the pearl in the corner of the home. When the doctor returns he is able to administer more medicine to help Coyotito. When he is questioning Kino about the pearl, Kino glances to its secret burial place. Knowing he possibly gave its position away, he reburies the pearl under his sleeping mat after the doctor leaves. Kino’s instincts were correct, that night an intruder comes in (presumably the doctor) looking in the corner for the pearl and Kino fights off the intruder.
