Lena returns home in the midst of a deep emotional crisis. Once there, the young woman will embark on a complicated search for an old home movie that shows a crucial moment in the life of her grandfather Juan, now seriously ill.

The Arpiz go through the most important duel of their lives. The cold relationship between Josu and Xabier, father and son, and the jealousy between Xabier and Hugo, with autism, for Enara's love, threaten to make it impossible. Hugo's passion for cinema will bring hope to this broken family.

Álava, 1872. The war between Carlists and liberals serves as the backdrop for an old and illiterate peasant who rapes and strangles women. His real name is Juan Díaz de Garayo, but posterity will baptize him as the 'Sacamantecas,' the first recorded serial killer in our country. Just like the dark Spain he lives in, Garayo will wage an inner war, and in his path, he will encounter Ángela Berrosteguieta, a mysterious woman who has recently arrived from France, determined to find him at any cost.

1978. The outskirts of Barcelona, shaped and raised mainly by immigrants from Extremadura and Andalusia, built with their own hands, is not considered part of the city. Their shacks do not even have running water, electricity, or public transportation. Fed up with a city hall that keeps saying they can’t send transportation there because the shack-lined streets are too narrow and unsafe, a bus driver (Eduard Fernández) hijacks his own bus and drives it to his neighborhood to prove that his people can indeed have a public transportation line. An act of peaceful dissidence that transformed Barcelona and changed the concept of the outskirts forever.

In 1935, Antoni Benaiges is hired as a teacher in a small, isolated village in Burgos, Spain. There, he establishes an intense relationship with his students, a group of young boys and girls between the ages of six and twelve, to whom he makes a promise: to take them to see the sea for the first time in their lives. 75 years later, the granddaughter of one of those students discovers the wonderful story hidden behind a promise that was never fulfilled.

A famous Spanish actor, Julio Arenas, disappears while filming a movie. Although his body is never found, the police conclude that he has suffered an accident at a cliff by the sea. Many years later, the mystery is brought up once more by a TV program that tries to evoke the actor, offering as a scoop images of the last scenes in which he participated, shot by his close friend, director Miguel Garay.