The maid is employed by a Teochew opera family with many secrets, who give her a place to stay in their dilapidated shophouse.
The film broke the box office record in Singapore for the horror genre, making S$700,000 on its opening weekend.
It starred Alessandra de Rossi, Hong Huifang, Benny Soh, Guan Zhenwei and Chen Shucheng.
Hailing from a small village in the Philippines, 18-year-old Rosa arrives in Singapore on the first day of the Seventh Month to work as a domestic maid.
While Rosa is exploring some of the shady areas of the house, she discovers the burnt corpse of Esther hidden in a concealed drum.
When they try to hang Rosa once the ceremony begins, Ah Soon's ghost suddenly remembers the way his father brutally murdered Esther the previous year and tells his parents that he does not want to see any more deaths in the house.
In the final sequence, Rosa is seen heading to the airport to fly back to her hometown on the last day of the Seventh Month when the gates of hell are closing.
She takes with her the urn containing Esther's ashes as she enters the airport while the spirits of the Teo family watch her disappear beyond the doors.