Z.P.G. (1972)

In a dystopian future where Earth is heavily polluted and overpopulated, a couple living in a biosphere dome finds themselves faced with the prospect of having a child. However, due to strict population control measures, they must choose between breaking the law and facing dire consequences or living childless. As they struggle with their decision, they also uncover the truth about their society and the bleak future that awaits them.