Isabela Junqueira is a girl of 11 years who has the dream of being a great singer. She lives in a luxurious mansion with his mother, an ambitious woman, and her father, a gentle and caring man. However, after taking singing lessons to attend a musical group, Isabela realize it's not so tuned to be able to sing. Saddened by the discovery, the girl goes to a party organized by the town, accompanied by his nanny, a very important person in your life. There, Isabela know Manuela Agnes - a sweet and sensitive girl, also aged 11, who lives in the village with his grandmother, his aunt and his mother, a modest seamstress. Isabela, which was drawn by the voice of Manuela when the girl sang, is surprised to observe it and see that the two are physically identical. From there, the two become friends and decide to keep their friendship in secret.