A look at the urban society of the seventies. The story of Marta a young and pretty girl, who leaves her husband to search for her true identity. She doesn't quite know what she wants, but at least she knows what she's escaping from. Soon she encounters financial difficulties and finds herself involved with shady characters, a situation that leads to a mysterious murder. The net closes around her.

A wealthy landowner, "The Dauphin," enjoys a decadent life of hunting, drinking, and womanizing. He oversees his estate, the Laguna, with his barren wife, his one-armed manservant, and his treasured guard dog. When a sportsman (the film’s narrator) comes to the estate for his annual duck-hunting excursion, he discovers the body of the landowner’s wife floating in the lagoon and the manservant dead on his master’s bed. The Dauphin and his dog are nowhere to be found except for the mysterious barking sounds heard over the lagoon.

At the end of the nineteenth century, an army force led by Major Mouzinho de Albuquerque, a cavalry officer, imprisoned in Mozambique the tribal chief Gungunhana, who had rebelled against Portuguese government and sovereignty. Mouzinho instantly becomes a national hero but his raising popularity worries the State.