Watch Sadisflix. This film was shot around the Bangkerohan River in Davao City on the southern Filipino island Mindanao. This area is the backdrop to degrading poverty that apparently can lead to degrading morality. A young girl watches with resignation. She works as mananaptan, someone who sings during funerals for the dead. And more services are expected of her. Fatally indifferent surroundings let it all happen.