When a police officer is murdered and set on fire, all eyes focus on two other agents: his girlfriend and her lover.

Apartment concierge Cesar is a miserable person who believes he was born without the ability to be happy. As a result, he decides his mission is to make life hell for everyone around him. A majority of the tenants are easy to agitate, but Clara proves to be harder than the most. So Cesar goes to creepy extremes to make this young woman mentally break down. Things get even more complicated in this twisted relationship when her boyfriend, Marcos, shows up.

In the harsh post-war years’ Catalan countryside, Andreu, a child that belongs to the losing side, finds the corpses of a man and his son in the forest. The authorities want his father to be made responsible of the deaths, but Andreu tries to help his father by finding out who truly killed them. In this search, Andreu develops a moral consciousness against a world of adults fed by lies. In order to survive, he betrays his own roots and ends up finding out the monster that lives within him.

Barcelona, ​​Spain, 1921. A tough cop from Madrid arrives in the city to locate, under the suspicious scrutiny of corrupt local police officers, a significant amount of military weaponry stolen from a train, allegedly by revolutionary anarchists.