The place is Helverton, Colorado, a town of about 350,000 people. 15-year-old Genevieve Gage and her best friend Tiana Moore are typical teenagers who spend a lot of time surfing the internet and sending messages to strangers in chat rooms. Upon "meeting" another apparent student who goes by the screen name of Captain Howdy, Genevieve and Tiana decide to attend a party at Captain Howdy's house. As it turns out, Captain Howdy has lured them into a darkness from which there may be no permanent escape. But what Captain Howdy doesn't know is that Genevieve's father is local cop Mike Gage. When neither Genevieve nor Tiana has returned home by the next morning, Genevieve's mother Toni alerts Mike. With the help of a younger cop named Steve Christian, Mike tries to find Genevieve and Tiana. Things take an unexpected turn when Tiana's car is pulled out of a lake...