The play tells the story of three maiden sisters - Masaraga, Malinao, and Mayon - born in the land of Ibalon. Each sister had a unique beauty. Tragedy strikes as the evil creatures Aswang and Oriol seek revenge against the sisters, killing them one by one. Mountains grow at each sister's burial site. In the end, the spirits of the three sisters help defeat Aswang and his followers, dancing with the people of Rawis to conclude the story of the three mountains.