A talented, voyeuristic hacker finds herself thrust into a dangerous investigation after her sex worker neighbor leaves for a weekend trip.

In 1988, the disappearance of a young girl shocks the population of little Brígida, in the interior of southern Brazil, resulting in the banning of pagan festivities of Ivana Kupala. Thirty years later, the city is preparing to bring the party back, but terrifying events, along with the dangerous ritual of transmigration of souls, unsettle the community and bring to light the secrets of a crime that ties three families’ destinies through time.