Jen is a recently widowed real estate agent trying to come to terms with her loss through therapy, exercise, and other methods. This is how she meets Judy, who is a part of a therapy group composed of bereft spouses. Jen is mourning her husband, who was killed in a hit-and-run accident while Judy grieves for her fiancé, who died of a heart attack.
The two characters face their loss differently as Jen finds herself in a dark place, struggling with her grief while Judy maintains a positive disposition. This difference quickly leads to a deep bond between the two. However, Judy keeps a dark secret that causes a disturbing plot twist. She was involved in the death of her friend's husband. Jen becomes more unhinged as she unravels the mystery of her husband's death and secret life.