
Nino is a 300-year-old boy who lives with his uncle, Dr. Victor, who is a 3,000-year-old sorcerer and scientist, and his great-aunt Morgana, who is a 6,000-year-old witch. The three live in a castle in the middle of the city of São Paulo. Being a sorcerer's apprentice, Nino never got to go to school, in special due to his unusual age for a boy. His parents left him in the foster care of Victor and Morgana, as they needed to travel on an expedition to outer space, taking his two younger siblings with them. Although he has supernatural animal friends in the castle, Nino misses having friends that are like himself, so he decides to cast a spell he learned from his uncle Victor, which ends up bringing three children who had just left school to his castle's doorstep. Free of loneliness, Nino then receives daily visits from the trio, in addition to special visits from other friends, such as the pizza delivery man Bongo, the flamboyant TV reporter Penelope, the folk legend Caipora, and an alien called Etevaldo. Dr. Abobrinha (Dr. Zucchini, also referring to the Portuguese expression of speaking senseless) serves as the main villain of the series, who is a real estate speculator who wants to demolish the castle and erect a 100-story tall building in its place.