After a tenant moved into a low-cost old building in Mong Kok, he found a strange Bagua mirror in the bedroom wall, and was involved in a terrifying curse surrounding the "yin door" Feng Shui.
Storyline:
1. The strangeness first appears: the heroine discovers the Bagua mirror facing inward in the wall, and Master Chen downstairs reveals that it is the "evil within the lock". That night she saw a faceless woman in a red wedding dress in the mirror.
2. Bloody past: The property revealed that the daughter of the former owner Zhu's family mysteriously disappeared wearing a red wedding dress on her wedding day, and the whole family died mysteriously later. Feng shui masters determined that this building was built on the "yin gate".
3. The evil array appears: The heroine pries open the floor and finds seven urns in a circle, with the eighth position empty in the center. The female ghost in red whispered in her ear: "The eighth position is reserved for you."
4. The fatal truth: Master Chen reveals that this is the "kinship locking formation", which requires the ashes of close relatives to suppress the vagina. The missing daughter was buried alive under the stove by her uncle as a weapon, and became the most vicious spirit because of her lingering resentment.
5. Life and death decision: After the heroine finds the bride's finger bone, she faces a desperate situation - either becoming the eighth living sacrifice, or taking the risk of breaking the formation at noon, which may completely unleash the horror of the underworld.