When a well-known environmental researcher is murdered in the Amazon jungle, an arrogant photojournalist joins forces with a beautiful young activist to find out who is responsible. Along they way, they fall in love as they discover the men responsible for the killing would be more than willing to murder again if it will keep them quiet.

Alex Caballero is a private detective by correspondence. An interesting case of adultery and blackmail appears, which could make the business quick off. The investigation starts and it gets complicated until it lands in a shady presidential campaign, discovering an election fraud and crimes comitted by a politician connected to drug trafficking in order to win.

Four stories taking place in Lima, Peru in the 70s.