The Third Wife(2019)

Original title: Vợ ba

Though only 14 years old, May is selected to be the third wife of a wealthy landowner. Her new home seems idyllic, her husband favours her, and she quickly becomes pregnant with what she is certain will be the desired male progeny. But trouble is quietly brewing: she witnesses a forbidden tryst that will spark a chain reaction of misfortunes — and stir in May urges that until now had been dormant.