In a small town in the interior of São Paulo, everyone lives happily: Tinoco and his fiancée Joana, Pirulito and Nhá Barbina. One day, the men in charge of opening a railroad arrive and, with them, trouble. Paulo, one of the engineers, tries to get Joana away from Tinoco. Tinoco is accused of stealing the workers' money and is arrested. Tonico pressures the delegate to investigate the case so that Tinoco can prove his innocence.

Thirteen people from different parts of the world are chosen by an English nobleman to share his fortune. After his passing, they gather in his castle. However, the heirs begin to be murdered, one by one.