Duplex movie plot

In the highly competitive city of New York, there is a dream-seeking couple: husband Alexplayedand wife Nancy. They are youthful and believe that they have unlimited beauty. future. But they also have a regret: they don't have a house of their own. Until one day, they finally found the most ideal house in their minds. It was a luxurious double-storey villa in a high-class residential area, old but with a classic style and very charming. Alex and Nanni rented the villa without hesitation. They thought they could live a sweet and happy two-person world from now on, but unexpectedly, on the second floor of the villa lived a weird old lady, Mrs. Connelly. Her various behaviors seriously disrupted her. Their new home life. When they were making each other, the old woman would ring their doorbell, or even stand outside the window to peek. The old woman's physical weakness made them exhausted, and their new home life became a nightmare. Finally, the husband and wife could not bear the hateful Mrs. Connelly. They decided to use an unknowingly conspiracy to deal with the lawless old lady and her parrot who specializes as an accomplice   .