Vaishnavi (Trisha) is a popular chef in India. Her friend’s fiancé Cotton (Yogi Babu) is stuck in a situation that demands him to go to London to work as a chef, but he is not qualified. He asks Vaishnavi to accompany him to pose as an assistant and help him secure the job. Vaishnavi agrees and travels to London with Cotton and a relative Balki (Swaminathan). They stay with Ganesh (Ganeshkar) and his wife Madhu (Jangiri Madhumitha) and work at a restaurant. Vaishnavi meets Sandeep (Jackky Bhagnani) there, and they fall in love.
One day, on a boating trip in a river, Vaishnavi injures herself and washes off her blood in the water. This triggers the vengeful spirit of a dead woman at the bottom of the river. She possesses Vaishnavi, who goes on a killing spree. Her friends experience numerous paranormal occurrences and find that Vaishnavi is possessed. The spirit turns out to be Mohini (Trisha), a lookalike of Vaishnavi. Meanwhile, Sandeep proposes to Vaishnavi, and they get engaged. They meet Sandeep’s mother Menaka (Poornima Bhagyaraj) and his father Vicky/KVR (Mukesh Tiwari). Mohini is enraged seeing him, and this reminds her of why she was killed.