An emotive journey of a former school teacher, who writes letters for illiterate people, and a young boy, whose mother has just died, as they search for the father he never knew.

João da Silva Brown, a resident of Salvador, has always been a fan of comics, movies and adventure series and superheroes. Once he learns about a course for detectives and decides to attend it. With his private detective degree, he sets up an office and places an ad in the newspaper. Now wearing a cape and hat, he waits in vain for customers.

When a prominent U.S. Nobel Laureate arrives in Salvador, Bahia, the city with the largest black population in Brazil, he stirs emotions by championing a long-forgotten local writer named Pedro Archanjo, who believed that humanity would be improved only through miscegenation.

In a large house in Salvador lives a family: Hercules, Julia, two of the couple's nephews, Hercules' father-in-law, and two maids. Hercules is a farmer who is in a professional and marital crisis. The mystical figure of Calunga mysteriously appears in the big house. He causes deep transformations in the family. Calunga relates to the women of the house and shakes the established patriarchal structure.