A sinister tragedy strikes the small town of Feria and leaves sisters Eva and Sofía perplexed - and wondering what they really know about their parents.

While searching for her mother, Sofía discovers a new world. The townspeople begin turning on the sisters.

The details of the murder of Father Ezcaray confuse Guillén. Sofía submerges in her new life. Eva's interview takes a supernatural turn.

In 1975, Elena is unable to fulfill the ritual her father wants her to make in hopes of carrying a normal life. The 90s provide them with new challenges.

While investigating the Gnosticism that can make her understand the Cult of Light, Estrella finds something important. Chisco tells Eva that he's worried about Sofía.

The sisters receive a secret message that culminates in a clandestine encounter. Sofía must choose between the cult and Eva.

Guillén becomes increasingly frustrated as he continues interviewing cult members in search for answers. Pablo tells his daughters the truth.

The Cult of Light and its demons do everything in their power to make Sofía open the Fifth Seal. Guillén has a revelation.