3G: A Killer Connection is a horror-thriller film. The movie revolves around a young couple, Sam (Neil Nitin Mukesh) and Sheena (Sonal Chauhan). Their lives take a turn when Sam buys a second-hand 3G-enabled phone while holidaying with Sheena in Fiji Island. He starts getting mysterious calls from an unknown caller that is followed by horrifying events. Sam soon realizes that his and Sheena’s life is in danger while the phone that he possesses is not a normal one.