Nikita Roy is a psychological thriller that revolves around Nikita Roy (Sonakshi Sinha), a sharp-minded author and investigator who uses logic and science to debunk supernatural claims. One fine day she confronts Amar Dev (Paresh Rawal), a powerful and enigmatic spiritual healer, whom she decides to expose after smelling something fishy with the way he preaches. This case challenges her rational beliefs and scientific worldview, forcing her to explore the boundaries between perception and reality. Will Nikita end her quest by exposing the real face of Amar Dev?