Karthik and his friends plan a trip to Kodaikanal where they meet a doctor and his 12-year-old daughter Shalini. While sight-seeing, they get in trouble with a gang that grows cannabis illegally. The next morning, Karthik is found dead and Shalini is missing.

Nandu and Vijay are brothers, who were abused by their stepmother during their younger days. Nandhu, who is mentally ill, decides to kill Vijay’s fiancee as he visualizes her as his stepmother.

Sadhu (Tamil: சாது) is a Tamil-language Musical film which is Directed by P. Vasu & performed by Arjun, Raveena Tandon and Released on 22 July 1994.