Kit, age 7, is a deaf girl living in a small kampong in Kuala Selangor which is famous for firefly habitants. Her hearing parents struggle with their financial situation, as her father is only a boat man taking tourists for the fireflies tour. Kit’s mother wants Kit to learn sign language and go to school, yet Kit is not brave enough to communicate with people, as she tends to live in her own world surrounded by nature. Things begins to change, when Kit encounters one firefly that seems to communicate with her, by blinking and flying in a certain manner.

Co-workers Ikmal, Botak and Mok find out about an urban legend at their work place - their work building requires an annual sacrifice after a woman had committed suicide there years ago. The urban legend soon proves to be true, putting all their lives in danger.