Avinash “Avi” Mehra is an ace photographer who is in a live-in relationship with Sonia, a model. One night while returning from a party, the couple accidentally hit a young girl with their speeding car. As Sonia was driving the car, to avoid further complications, Avi insists on them fleeing from the accident scene. But trouble starts for the couple soon after. While strange white marks begin to appear in Avi's photos, Sonia starts having spooky experiences. Avi also develops a severe neck pain and even though he does not appear to be overweight, a scale reveals that he weighs 120 kilograms (264.6 pounds). Avi, too, starts having experiences similar to Sonia's. The couple is petrified when all of Avi's best friends commit suicide in a similar manner. It then comes to light that the spirit haunting them all has a connection to Avi's college life. Meanwhile, Sonia finds out that Avi was friends with a girl named Aarti Kaushik during his college days. As Avi and Sonia are still being haunted by Aarti they go and visit her, but realize that Aarti is dead, having apparently committed suicide by using a knife. Aarti's mother believes that she is still alive, thinking that she is merely ill and will recover. On the way home Aarti continues to haunt Avi and Sonia, and again during the night at the hotel she also haunts Avi in his sleep, ending up with him being thrown off the fire escape..