Anna Fox lives alone, a recluse in her New York City home, unable to venture outside. She spends her day drinking wine (maybe too much), watching old movies, recalling happier times… and spying on her neighbours. Then the Russell’s move into the house across the way: a father, mother, their teenaged son. The perfect family. But when Anna, gazing out her window one night, sees something she shouldn't, her world begins to crumble.