Vivarium (2019) on Netflix

Plot summary

Gemma teaches primary school and Tom works as a landscaper. They visit a housing development called Yonder, where every house is identical, and an unusual agent named Martin shows them number 9. Martin asks whether they have children and echoes Gemma's reply, then disappears. The couple cannot get out: driving the endless identical streets brings them back to the same house until their fuel runs out, and walking out returns them there too. They spend the night inside. Outside they find a box of vacuum-sealed food that tastes of nothing. Tom sets the house alight and they sleep on the pavement, but morning shows no damage, and a fresh box holds a baby boy with a note saying the child must be raised for them to be set free.