Mahasamut Boonyaruk

Pod decides to change jobs after losing his finger at a sardine packing plant. His new job as a security guard comes with an unexpected perk in the form of a lanky maid who carries a mysterious white book.

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.