Javier Falcón, Chief of the Homicide Division in Sevilla, must solve two different cases in a short time. In the first situation he is personally involved: an old friend of his infiltrated an Islamic terrorist cell and now the group is trying to recruit his young son for their cause. At the same time, Falcón must also deal with the kidnapping of a child by the Russian mafia which he is investigating, but the ransom they are demanding is too high…