After twenty four years of marriage, Meg Beckwith's husband informs her he is leaving her for another woman. Feeling the need to get away from the empty house, Meg goes to her childhood home seeking solace, but instead finds the house occupied by the ghost of her older sister, who died in a car accident over thirty years before. The ghost urges Meg to eliminate the other woman and win her husband back. Meg is uncertain of whether the voice she hears is indeed that of her dead sister, or her mind's own way of dealing with subconscious desires. On a trip into town, Meg runs into her high school sweetheart and begins rekindling an old flame, hoping to find happiness without her cheating husband. This angers the ghost for reasons Meg doesn't understand, until she learns of the connection between her husband's lover and her sister's fatal accident more than thirty years before. With its secret out, the ghost becomes elusive, surreptitiously taking over Meg's house. In one night, it manages to succeed in getting revenge, and death comes in three. Horrified, Meg must find a way to say goodbye to her sister once again, and end the haunting, putting the past to rest.