Beth Raymond is traumatized when she witnesses the gruesome deaths of two friends just days apart. Even more disturbing, she knows that both of them had received chilling cell phone messages--actual recordings of their own horrifying last moments. Impossibly, the calls were received days before they died, but each death occurred precisely when and how the messages foretold. The police think Beth is delusional--except for Detective Jack Andrews, whose own sister was killed in a freak accident that bears a strange similarity to the deaths of Beth's friends. Together, Jack and Beth work feverishly to unravel the mystery behind the ominous calls. But even as they get closer to the truth, Beth's cell phone begins to ring with an eerie tune, and the readout displays: "One Missed Call."

A chain of people receive terrifying cell phone messages of their own final fatal moments. Though the messages can be deleted, their number is up.