When U.S.-based Rahul Verma is told that his long-time girlfriend, Priti Rastogi, is getting married, he returns home to Mumbai. Upon arrival he is shocked when told that that his father died mysteriously in his 17th floor flat (apartment), and Priti is missing. After speaking with Inspector Shinde, he goes to the flat, and here he receives a phone call from a distraught Priti who wants to meet him. He agrees to do so, but will soon himself in a nightmarish situation when he will keep on ending back up on the 17th floor immaterial if he takes the elevator or the stairs to go on the ground floor. But nothing will prepare him for the shocks that await him in his very own flat.