Suffering from chronic migraines, traumatised Sister Gertrude secretly relies on potent morphine injections to keep performing her duties at a hospice. However, as excruciating pain evolves into a daily nightmare, defenceless and unsuspecting patients start dropping like flies, and Sister Gertrude's constant anguish transforms into something inexplicable. Undoubtedly, someone takes great pleasure in inflicting pain on the hospital's elderly inpatients. Is there an escape from the clutches of the depraved killer nun?
—Nick Riganas