Anita, a young woman with Down's syndrome, and Dora, her mother, live in the Buenos Aires Jewish neighbourhood of Once. Anita helps her mother in the family business, a stationery store located in the same building where they live. On the morning of 18 July 1994, Anita is left alone in the store while her mother goes to the AMIA headquarters, situated nearby. On that precise day, the AMIA building is bombed. Dora perishes in the attack and their store is completely destroyed. Amid the confusion, Anita ventures out in search of her mother, but she gets lost in the streets of Buenos Aires. Her meanderings lead her to encounter a variety of people. The first person she meets is a failed photographer who gives her shelter for two nights. Next, she is begrudgingly taken in by a Chinese family who runs a grocery store. Finally, she ends up in a deprived Buenos Aires suburb where she is taken in and cared for by a frustrated nurse. Meanwhile, her brother Ariel, distraught over the death of his mother and the disappearance of his sister, looks for her.