Buenos Vecinos (2022)

Romina, a happy go lucky naive girl, recently moved in to her new apartment. While baking a cake she runs out of sugar, and decides to knock on a neighbors door to ask for some. A tall unusual man answers the door and invites her in while he looks for some sugar. She accepts, and meets his mother inside. Having some small talk with them, she slowly starts noticing strange things in the way they behave, eventually discovering something horrifying.