In a Thai medical facility, a doctor and his team of seven attractive nurses are involved in an illicit trade of cadavers. When jealousy stirs among them, one nurse threatens to expose their operation, prompting the others to kill her. However, the vengeful spirit of the murdered nurse soon returns to seek retribution. Through a series of flashbacks, the story unfolds, revealing the intricate web of relationships among the central characters leading up to the tragic event.