Tom Witzky (KEVIN BACON) is a phone company lineman who's moved into a recently renovated rental home not far from where he grew up in Chicago. Although he's got a beautiful wife, Maggie (KATHRYN ERBE), and an adorable little boy, Jake (ZACHARY DAVID COPE), Tom isn't thrilled with his life since he's never amounted to much and thinks of himself as just ordinary.
Unbeknownst to him, all of that's about to change. Attending a neighborhood party with friends such as Frank McCarthy (KEVIN DUNN), Tom challenges Maggie's sister, Lisa (ILLEANA DOUGLAS), to hypnotize him after voicing his doubts about such matters. Although she's reluctant, she does so, and when Tom finally comes out of it, he experiences some odd and disorienting sensations and visions, as well as an insatiable thirst.
He doesn't think much of it, but after seeing the ghost of a dead teenage girl sitting next to him on the couch as well as odd flashes of blood red light, Tom starts to worry about what he's seeing. After Jake informs him that he's seen the same girl, Samantha (JENNIFER MORRISON), Tom becomes obsessed with figuring out what's going on. No longer going to work, he then spends his time on the sofa trying to see this girl again, hoping to find answers to his newfound power.
Of course Maggie doesn't understand this sudden change in her husband, although a chance encounter with a mysterious local cop (EDDIE BO SMITH, JR.) does give her some insight into the special powers that Tom and their son apparently possess. With more troubling visions and an increasing urgency to have his questions answered, Tom's obsession grows to the point where he soon endangers his personal as well as family's well-being.