Bhool Bhulaiyaa 3 follows Ruhaan, a charming fraudster who pretends to be an exorcist. He takes on a high-paying job at a haunted castle, hoping for an easy payday. However, he soon discovers a dark and twisted conspiracy involving mischievous priests and hidden secrets. As Ruhaan tries to navigate the bizarre and eerie happenings, he finds himself caught in a whirlwind of unexpected twists, laughs, and spine-chilling moments, making for a thrilling yet hilarious adventure.