On a tropical island in the Pacific Ocean, a lonely volcano watches the wildlife creatures frolic with their mates and wishes to find one of his own. He sings a song (lava) 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 female volcano has heard him every day and has fallen in love with him.
She emerges on the day when that volcano becomes almost extinct, but her face is turned away and she cannot see him. He sinks fully into the ocean, heartbroken, but revives, full of lava when he hears her singing his song to him. His fire is re-ignited, he erupts back to the surface, this time right next to her, and the two form a single island where they are together, singing his song together.