In a luxury complex, Petra and Antonio investigate the murder of a man with many hidden secrets.

The death of a homeless man forces Petra and Antonio to confront a cruel reality.

The corpse of a boy disguised as a devil leads Petra and Antonio to a terrible hidden truth.

The theft of a gun triggers a series of murders that lead Petra and Antonio into the world of child gangs... the arrival of Marco, the father of a young witness, impacts Petra's love life. What will their connection lead to? And what effect will it have on Petra and Antonio's relationship?