"Nagbigti si Natividad" is a Tagalog horror animation based on a true story about Natividad, a woman who becomes a victim of kulam (witchcraft) after a dispute with a jealous neighbor. Following the conflict, Natividad faces a series of misfortunes—illness, crop failure, and haunting visions. Desperate for help, she consults a local albularyo (healer), who confirms that she has been cursed.

Despite efforts to break the curse through rituals, Natividad's situation worsens, leading her to despair. In a tragic turn, she takes her own life, believing there is no escape from her torment. The story explores themes of jealousy, despair, and the dark consequences of witchcraft, highlighting the cultural impact of kulam in Filipino society.