After months of preparation and seclusion, The Professor and his band of eight recruited robbers begin to attack the National Coinage and Stamp Factory of Spain. Everything goes according to plan, until the police shows up and shots are fired. Hostage negotiator inspector Raquel Murillo makes initial contact with The Professor, and it turns out that one of the hostages, Alison Parker, is a crucial part of the thieves' plan.

Knowing that the police won't try to storm the building again after their first failed attempt, the robbers start to use the hostages to print money, to dig a tunnel for their escape, and to negotiate with the police. Raquel, who quit due to a verbal argument with Colonel Prieto after the failed rescue mission, meets a strange gentleman at a bar and gets suspicious. Because of Alison's phone, the police is able to identify 2 of the robbers, Tokyo and Rio - and that's not the only phone the robbers missed to collect.

Monica Gaztambide, the secretary and pregnant mistress of the chief of the Factory, Arturo Roman, gets shot by another robber, Denver. While Raquel is in negotiations with The Professor about the hostages and consults with Prieto and her colleague, sub-inspector Angel Rubio, she gets an important private phone call from her mother, delivered to her by the strange gentleman she met at the bar, Salva. When Moscow learns that his son, Denver, shot a hostage, he wants to give up himself - which leads to another hostage being shot at.

After almost getting caught by Raquel at the scrapyard, The Professor has to find a way to scare of a witness that could reveal his identity. One clue he deliberately left behind helps the police to identify Berlin, who seeks revenge once his own name is revealed and slandered in the media - which leads to an unexpected discovery. Meanwhile, the police is searching for a mole in their own midst.

Nairobi takes charge among the robbers and it is decided to use the release of another group of hostages to gain sympathy with the public via the media. That doesn't prevent Arturo from making another plan to escape from the building. Raquel is getting more intimate with Salva, which encourages her to set a trap for The Professor and unveil his true identity.

When Rio is captured, a distraught Tokyo turns to the Professor for help. Armed with a bold new plan, they reunite the team in order to rescue him.

Palermo shocks the group with his actions. Sierra pressures her subject to take a deal. The Professor remembers his brother's wedding.

The Professor's mole attempts to pass along his message to the person inside the tent. Denver's jealousy toward Mónica and Rio's friendship heightens.