Bhool Bhulaiyaa is a horror comedy-drama that revolves around Siddharth Chaturvedi (Shiney Ahuja), an NRI, and his wife, Avni Chaturvedi (Vidya Balan), who decide to live in their ancestral palace. Everyone believes this palace to be haunted by the ghost of Manjulika, a classical dancer in the court of Raja Vibhuti Narayan, ancestor of Siddharth. Manjulika hanged herself after the king killed her lover and swore to kill all the kings who lived in the palace. Soon, after they arrive in the palace, Siddharth and his family experience unfathomable occurrences. Siddharth calls his psychiatrist friend Dr. Aditya Shrivastava (Akshay Kumar) from New York, to try to figure out and help with the situation as he believes that it is not the ghost, but the actions of someone who is mentally ill.