Nakon seanse spiritualizma Laura Villegas počinje da se ponaša čudno. Uznemireni zlokobnim ponašanjem kćerke, i uvjereni da je demon zaposjeo, njeni roditelji odlaze kod oca Olmeda, jednog od 15 egzorcista koje je Vatikan ovlastio da intervenišu u slučajevima opsjednutosti demonima. Sada moraju proći kroz trinaest obreda egzorcizma, od kojih je svaki strašniji i nepredvidljiviji od prethodnog.

Malasaña neighborhood, Madrid, Spain, 1976. While political turmoil ravages the streets all over the country, the Olmedo family arrives in the big city and settles into their new apartment. They soon discover that they are not the only ones roaming its corridors.

Ramón and Céline are a young couple that attended a concert at the Bataclan theatre in Paris on the fateful night of November 13, 2015. They survive the attack, but when they leave the theatre, they are no longer the same. That night leaves a deep scar on both their lives and each tries to cope with the aftermath as best they can. Céline desperately tries to leave the events behind her, clinging to her previous life, while Ramón repeatedly goes back to that night, trying to remember and understand what happened. Nonetheless, they both face the same key question: how to reconnect and move on together?

Son confesses to his mother, Ana, that he does not feel like a girl; he is a boy. Confused and blocked, Ana will decide to stop in order to observe and understand him and, in the same way, to understand herself. Ana and Son are two sides of the same coin: a mother who does not take care of herself, of her own identity, and a boy in search of his identity with all his strength.