A sinister tragedy rocks the small town of Feria and leaves sisters Eva and Sofía stunned and questioning what they know about their parents.

While searching for answers about her mother's whereabouts, Sofía is introduced to a new world. The townspeople of Feria begin to turn on the sisters.

In 1975 Elena struggles to fight what her father wants her to do ritualistically, with what she sees as her future. The 90s come with fresh challenges.

Estrella researches Gnosticism to learn more about the Cult of Light, which leads her to a discovery. Chisco expresses his concerns about Sofía to Eva.

The sisters are sent a covert message, resulting in a clandestine meeting. Sofía makes a choice between the cult and Eva.

Guillén is consistently frustrated as he interviews members of the cult in his search for answers. Pablo speaks candidly with his daughters.

The Cult of Light and its demons do everything in their power to get Sofía to open the fifth seal. Guillén has a revelation.