Priya (Kajol) and Seema (Shilpa Shetty) are sisters. Seema falls in love with Ajay (Shah Rukh Khan) and decides to marry him on the sly since she is terrified of her father's (Dalip Tahil) wrath. But Seema is mysteriously murdered and Priya tries to trace the murderer with the help of her boyfriend, Vicky (Shah Rukh Khan). She finds out that Seema's friend and secret lover (Dabboo Mallik) has committed suicide after leaving behind a note claiming responsibility for Seema's death. Priya is convinced that her sister's killer is dead and her life takes on a new direction after she is engaged to Vicky. But she finds out that Seema's killer is alive and Priya vows to hunt him down.