When old friends from school start dying one by one, Sayree and Nataya begin to search for the secret of the letter that each of their friends received before death. Soon the two believe they are the next targets.
Mahasamut Boonyaruk
Andy Kempimok
Nahatai Lekbumrung
Bunthawat Lorkaewrujee
Treepon Promsuwan
