For those who may not know, "Memento" is a psychological thriller film released in 2000, directed by Christopher Nolan. The movie follows the story of Leonard Shelby, a former insurance investigator who suffers from short-term memory loss, which prevents him from forming new memories. He sets out to avenge his wife's murder, using a system of tattoos and notes to guide him.
You're referring to the Tamil dubbed version of the movie "Memento"! Memento Tamil Dubbed Movie 256