Khoj is a mystery thriller drama. The movie revolves around a man named Ravi Kapoor (Rishi Kapoor), who goes on a holiday in Kathmandu with his wife Anita (Kimi Katkar). However, while on the trip, Anita goes missing. Ravi tries to search her everywhere, but all his efforts go in vain, thus he files a missing report of his wife in the police station. The next day, he gets a call from Father Anthony (Danny Denzongpa) saying that he has his missing wife, but when he meets the girl, he claims that she is not his wife. Who might be this woman, if she is not Anita? Where did Anita go suddenly? Will Ravi be able to find out the truth?