"El Señor de los Cielos" returns tonight for a second season.

Aurelio Casillas is not dead. Instead, his death will be part of an elaborate plan to seek vengeance on those that betrayed him and so that he can come back and reclaim his empire with absolute strength, Ideal said.

In the first season, Casillas starts as a humble man. He becomes a drug lord and the head of the Juarez Cartel, making him one of the richest men in the world. He became known as the Lord of the Skies because he transported drugs by a fleet of jets. Aurelio's life becomes all about trying to survive as the DEA is after him. He decides to start his life anew and undergoes plastic surgery so he can literally get a new life. He is believed to have died.  

In this upcoming season, he will come after Chema Venegas.

It goes past a business struggle between the two, as Venegas has gotten Casillas' daughter pregnant.

There was a special episode aired on Friday, but it's officially back tonight.

This show is based on real events and people, namely Amado Carrillo Fuentes, who did become the head of the Juarez Cartel.

In 1997, he underwent facial plastic surgery and liposuction to change his appearance in Mexico City. He died after the nine-hour operation because of complications. The two physicians who performed the operation were found a few months later with signs of torture on their bodies.

There were a lot of theories about what really happened.

For example, some said that Fuentes' two bodyguards, who were in the room during the operation, smothered him with a pillow. Or he was tortured to death, and the plastic surgery was a cover up. Another version says that he committed suicide.

The show airs tonight at 10 p.m. on Telemundo. You can watch the first 20 minutes here.