Kino and his wife Juana live in a small village along in La Paz with their baby Coyotitio. They are a poor family but they are still happy with their everyday routine.
Coyotito was stung by a scorpion. Juana is very worried while kino smashed the scorpion to pieces.
Kino and Juana can not afford a doctor to treat Coyotito so they go pearl diving hoping to find some that are worth enough to pay for Coytito's treatment. Kino ends up discovering a large pearl. He tries to sell it but fails. KIno and Juana are attacked by many people who are jealous and after the pearl.
Kino catches a man trying to steal the pearl from his home and follows him to the shore. There KIno fights the man and kills him out of self defense. KIno and hid family now have to leave, they are leaving for the capital to try and sell the pearl.
While KInand Juana are on their way to the capital they find out hunters are tracking them. They try to mess the hunters up by leaving multiple tracks going in different directions. When night falls Kino attacks the hunters while they are sleeping. Coyotito is accidentaly shot while the hunters are fighting Kino. Kino kills the hunters and they head back home.
KIino and Juana return to the village with Coyotito's body in their arms. They walk to the shore and throw the pearl back into the ocean together.