In the wake of a terrorist attack on Seville, Inspector Jefe Javier Falcon is determined to fulfil his promise to its citizens - that he'll bring the real perpetrators to justice. The violent death of a gangster provides evidence implicating the Russian mafia in the outrage but pitches Falcon into the heart of a turf war over prostitution and drugs.
Now the target of vicious hoods, Falcon finds those closest to him are also coming under intolerable pressure. His best friend, who's spying for the Spanish government, reveals he is being blackmailed by Islamist extremists, and Falcon's own lover suffers a mother's worst nightmare.
Confronted by such fanaticism and brutality, Falcon realizes that only the most ruthless retaliation will work.
But there is a terrible price to pay…