The Perfect Guy tells the story of Leah Vaughn who breaks up with her boyfriend David because he does not want to commit to having a family. She soon meets and begins a relationship with Carter Duncan, who is charming at first but slowly becomes possessive and obsessive with Leah. After an altercation at a restaurant, Leah breaks up with Carter, but he begins stalking her. Carter's stalking becomes dangerous and life-threatening, as he breaks into Leah's home and installs hidden cameras. Leah contacts her ex David about rekindling their relationship to get away from Carter.