CID officers come across a car accident while out driving. They rush to help the driver, who, seconds before passing out, says she has killed someone. But upon awakening, she can no longer remember anything- no details about who she may have killed, not even her name. Who is this woman? Who has she killed? Can CID solve this mystery with help from this amnesiac, perhaps at her expense?

A mysterious man comes to the CID headquarters claiming the woman is his niece, and that her mental state is unstable, taking her home with him. But in the meantime, forensic evidence proves that the accident occurred because the car's tyres were shot at. The woman was evidently telling the truth about someone being after her. Who was that man, then? Could he be the true culprit of this crime? Will CID be able to solve this mystery and save the woman's life?