A church priest approaches Ferrer and El Ruso asking for help to stop a a young couple that attacked its church with satanic symbols, at first they are unable to help but they get interested in the case as they learn the couple is part of a big and dangerous satanic cult. Quique, Lucía's boyfriend, comes back to Madrid to inform her he has accepted a job in Morocco which requires him to leave the country for two years, this information puts strain in their relationship. Susana attends new cop Lucas after he suffers a motorcycle accident, however a mistake regarding the dose in the medicament she gives him may have terrible consequences on Lucas career. As the police force is assigned to stop a band of blackmailers, Carlos is assigned to do a night surveillance with Marina, the two cops remember some missions from the past and during the night some attraction arises between them. Jaime and Vera find a kid that escaped his home, after returning him to his parents Jaime is worried about the possibility of the child suffering physical abuse from his father, however when the kid is found beaten doctor Gonzalo denies the possibility that the father is responsible while the dislike between the two characters continues. Sebas, the prison warden, is assigned to patrol alongside Mateo for a short while, until Rafa is able to return to active duty. After some time in prison Rafa and Pedro friend, Pascual, is granted a weekend pass, out of jail he learns his girlfriend has been cheating on him with another friend.
—Pencho15