Plae Kao (Thai: แผลเก่า; rtgs: Phlae Kao; literally Old Wound) is a 1977 Thai romance-drama film directed by Cherd Songsri and starring Sorapong Chatree and Nantana Ngaograjang as two peasants in rural Thailand in a tragic, romantic relationship. The film is also known as simply The Scar.The film was one of the biggest box-office hits in Thailand at the time.