'Isyarat' takes the innovative approach of bringing together five young directors, Asmirandah, who made Teman Bayangan (Shadow friend); Monty Tiwa (Lost and Found); Adhyatmika (Flora); Donny Alamsyah (Tanda Bahaya or Alarm); and Reza Rahadian (Gadis Indigo or Indigo girl), to create a series of separate but interconnected supernatural tales.
Ratna Suminar, the new student meets Galih Rakasiwi as a cold and indifferent figure. Until then the two of them fell in love with each other. However, Ratna's father opposes their relationship. Various methods are used to separate them. Will Galih and Ratna accept the fact that their love story will never end?