"Simbang Gabi" is a Tagalog horror animation about Anton, who attends a Simbang Gabi mass at an old, haunted church with his friends. As the mass begins, Anton notices that the congregation and priest are not human, but spirits trapped in a cursed Simbang Gabi from years ago. His friends start disappearing one by one, and Anton realizes he must escape before becoming the next victim. To break the curse, he must uncover the church’s dark past and perform a forgotten ritual. The story blends Filipino Christmas traditions with supernatural horror.