Review:Young Juan and Milagros are models of a Photographer who tells Juan to first kiss the girl. He is then ordered to drag down her pants as he snaps another shot.
Buenos Aires, Argentina. 1912. A series of brutal child murders is extending throughout the city. Mateo (Juan Ciancio), a 10 year-old boy, is hiding a secret: sometimes his mind takes him to dark places inside his memories, where he becomes the witness to the murders. When Mateo's secret is unveiled, he turns into the main murder suspect. With help from the police and Dr. Soria, his mother Stella (Maribel Verdú) tries to find a rational explanation for these visions and hopefully counteract the persistent skepticism of Inspector Petrie. Yet the murders continues and absolute chaos ends up taking over the situation. - IMDb
When he is ordered to drag down her panties, he is about to do it, but Milagros push him back as he scared runs away.