David Harris (Dylan Walsh), who is very much a 'family values' man, mysteriously comes into the lives of single mothers with children and becomes the dream man they've always wanted. When he woos Susan Harding (Sela Ward) and eventually moves in with her family, her teenage son Michael (Penn Badgley) begins to suspect that David is not quite the dream man he pretends to be. Along with his girlfriend Kelly (Amber Heard) and Susan's friends they slowly start to piece together the mystery of the man who is set to become their stepfather, but they may be too late in getting to the truth.