Three couples of friends meet in a house to celebrate the birthday of one of them. A relaxed conversation about romantic comedies will be the starting point of a weekend in which mistrust and uneasiness will reign.

Mónica meets Joaquín in a bar to tell him about the strange phenomenon that is happening to her: everyday everyone around her starts to dance out of nowhere.

Vitoria-Gasteiz, Basque Country, Spain, 2019. Two corpses appear in the crypt of the Old Cathedral. Police officer Unai López de Ayala, an expert in criminal profiling, must hunt down the ritual murderer who has been terrorizing the city for two decades.

Overprotective parents are forced to confess to their 10-year-old daughter that she is adopted when she starts asking questions. The parents debate whether or not to tell her, while questioning their legitimacy as parents.