On a tropical island in the Pacific Ocean, a lonely volcano named Uku watches the wildlife creatures frolic with their mates and hopes to find one of his own. He sings a song to the ocean each day for thousands of years, gradually venting his lava and sinking into the water, but does not realize that an undersea volcano named Lele has heard him every day and has fallen in love with him. She emerges on the day that Uku becomes extinct, but her face is turned away and she cannot see him.