Vivarium

The opening scene depicts the brood parasitism of a cuckoo before introducing primary school teacher Gemma and her handyman boyfriend Tom. Looking to buy a house, the couple meet up with an odd and persuasive real estate agent named Martin, who seems to mirror their behavior. They agree to visit a for-sale suburbia, and follow his van to a development of identical houses dubbed Yonder. Martin shows them around house number nine and asks if they have any children. When Gemma replies no, he's able to mimic her voice perfectly.