Annabelle Sethupathi

In 1948, Kadhiresan visits a palace built by King Veera Sethupathi and wishes to own it himself. In 1966, his niece gets possessed while cooking for her husband and daughter, leading to the family's death in their sleep. The family's spirits, including Kadhiresan and his dead cook Shanmugam, are trapped in the palace due to a mysterious force that compels Shanmugam to poison the inhabitants every full moon. In 2021, Rudra, a small-time thief, enters the haunted castle with her family, who have been feuding with other thieves. They agree to clean the palace for Inspector Kadhir, the great-great-grandson of Kadhiresan, who wants them to live there until the full moon to prove it's safe. Rudra and her family plan to fake a haunting to acquire the palace cheaply, but things take a turn when Rudra falls in love with a government official resembling Veera Sethupathi, who tells her that the government will seize the palace as a heritage-listed tourism site.