Kucch To HaiKaran (Tusshar Kapoor) and Natasha (Anita Hassanandani) are childhood friends. Natasha has always loved Karan, albeit secretly and wanted to marry him. Karan, however, falls for Tanya (Esha Deol), the new admission in college. Meanwhile, Professor Bakshi (Rishi Kapoor), who is rumoured to have murdered his wife and hidden her body, is reinstated at the college. When Karan blows hif Tanya, a playboy named Yash (Yash Tonk) befriends him and helps his way through Tanya's heart. To impress Tanya, Karan promises her that he will steal the exam answers from Professor Bakshi's house so that Tanya would pass easily. Together Karan, Natasha and Yash along with two other friends, Pat and Kush, sneak inside Professor Bakshi's house to retrieve the exam papers so Tanya's year won't be a waste. When they find a woman's dead body there, they try to run away but are chased by Professor Bakshi. Their car accidentally hits Professor Bakshi and he falls down the cliff. Fearing arrest, they run away. Tanya is traumatized by these events, and leaves to start a new life. Years later, Tanya, Karan and their group have a reunion at the wedding of one of their friends. However, a killer is lurking somewhere nearby and is waiting to strike. And one by one they start to die: Dolly, Pat and Kush are all killed, while Yash is attacked, but miraculously survives. Eventually, only three are left.