Falcón is a detective whose home and work life is compromised of secrets from his past.

In 19th century Seville, the lusty, tempestuous Carmen seduces a naive Army corporal, Don Jose, newly assigned to the village fortress. Jose abandons his career, his fiancee and even his dying mother for the love of this sultry gypsy. But soon she spurns him in favor of a toreador, Escamillo. Crazed with jealousy, Jose begs Carmen to return to him, but her taunting declaration of independence results in tragedy.

Unit 7 has a tough mission: to clean the most dangerous drug trafficking networks out of the city of Seville, and bring an end to the corrosive power that has taken hold of the streets. A detail of four, led by Angel, a young officer aspiring to detective, and Rafael, a violent, arrogant, yet efficient cop are on the beat. But Unit 7's modus operandi is slipping outside the bounds of law through their use of violence, coercion, lies and half-truths....