A teen appears dead from an overdose on the beaches of Ritoque, and Commissioner Olivia Fernandez is summoned to investigate. Meanwhile, the young men of The Pack are soon to regain their freedom. Faced with the news, 1616 - the activist group led by Z - take action.

Arrested, Sofia is taken to a secret detention facility. She suffers abuse from the police who want to get to her leader. In the Ritoque investigation, Olivia meets the father of one of the girls who disappeared on the beach, who tries to run a parallel investigation.

Following the enquiry trail, Olivia and Sandra reveal that there was a second party on a yacht. They discover the boat was rented by the owner of a computer analysis company. Meanwhile, Sofia discovers that behind the secret operation there is an old family friend.

Javi infiltrates the world of illegal drugs on the trail of a mysterious dealer. Blanca, Celeste and the 1616 group arrive at the secret detention facility to file a report, but they discover that it has been cleaned up. A deadly attack occurs at a university party.

Olivia begins to investigate what happened at the university and realises that it's similar to what happened in Ritoque. Gonzalo infiltrates The Pack's shock group. In turn, Javi manages to make an appointment with The Alchemist, the creator of the complex drug.

Valenzuela and Francisca organise a meeting with the main leaders of the extreme right. Gonzalo remains in communication with Cero to carry out a kidnapping plan. Meanwhile, Olivia meets with Pardo to tell him about an important discovery regarding his daughter.

Olivia and Elisa take Gonzalo and Celeste to a safe house. Elena and Koch meet and have a discussion in which a hidden truth comes to light. While the parapolice officers arrive at the safe house, Valenzuela receives a call from Z, who offers him a deal he can't refuse.

Javi meets with Franco Duval's brother and something unexpected happens. The 1616 group meets up with Valenzuela; a tense confrontation ensues. At the same time, the trial against Valenzuela and his people takes place.