Inspector Dario Deigo arrives at Monserrata. A forensic team is on the scene, and a pile of dead birds is in front of the church. All he knows is a woman named Esmeralda Lagano was murdered. Like all villages, everyone knows nothing, but everyone knows everything. When a high level of strychnine in the bird's guano is detected, it changes everything. The small town's corruption, petty jealousies, or superstitions will not prevent him from getting to the truth.