It's a Sunday afternoon, and Delia is writing in her diary. She has temporarily moved abroad as a volunteer Spanish teacher and is living with three new roommates in an apartment. The day drags on, and each of their minds is filled with intrusive thoughts, weaving a web of worries that grows ever more entangled.

Eva is in a happy moment of her life with her new partner, Nazario, and his daughter Alicia. But an encounter with her ex, José, opens the door to complicated situations that will send her on a journey of fear that has terrible consequences for everyone. Nothing is what it seems.