An unmarried young couple, Kaia and Andrew, are renovating Kaia's secluded family estate. Their lives are violently disrupted upon the unexpected arrival of Kaia's half sister, Christine, and her fiancé, Ira. Prior tensions and jealousies burgeon as new alliances form and childhood patterns resurface. As the days grow darker and the nights more disturbing, Kaia is forced to confront Christine's increasingly tangled perception of reality, which in turn may have begun to alter her own. When one of the four characters goes missing, the three left behind are flung into upheaval trying to fill in the blanks.

In upstate New York in the 1850s, Abigail begins a new year on the rural farm where she lives with her husband Dyer. As Abigail considers the year to come through her journal entries, we experience the marked contrast between her deliberate, stoic manner and her unraveling complex emotions. Spring arrives and Abigail meets Tallie, an emotionally frank and arrestingly beautiful newcomer renting a neighboring farm with her husband, Finney. The two strike up a tentative relationship, filling a void in their lives which neither knew existed.