Kucch To Hai is a romantic suspense thriller drama. The movie revolves around a group of college friends. Karan (Tusshar Kapoor) and Natasha (Anita Hassanandani) are childhood friends, and Natasha is secretly in love with Karan. While Karan falls for Tanya (Esha Deol), a new student in their college. To impress Tanya, Karan decides to steal the question papers from the professor'shouse. Together Karan, Natasha and three more friends – Pat, Kush and Yash sneak inside Professor Bakshi’s (Rishi Kapoor) house. However, things take a turn when they meet an accident and hit Professor Bakshi, making him fall down the cliff. Years later, the group reunite at a wedding of their friend, unaware of the fact that the professor is still alive and is back to take the revenge. Will the friends survive this killer or become his target?