Sanjay Ramasamy (Surya) is a rich tycoon suffering from short term memory loss due to being hit by a metal pole when trying to intervene on his girlfriend's murder. Because of the severe injury on his head, his memory can only last for fifteen minutes and he doesn't remember events or incidents that have happened before in his life. He can now only live a comprehensible life by tattooing notes on himself and taking pictures of things with a Polaroid camera to remind himself of the incidents that have happened. His story in unraveled by a police officer who is hunting him due to several murders he has committed while trying to find his girlfriend's murderer through his diary. His story has also piqued the interest of a medical college student, Chitra (Nayanthara) who is searching for a patient with an "interesting" record for her college project. Chitra comes to know about Sanjay's love with Kalpana (Asin) a model cum activist. When her activist work for children comes in the way of child racketeers, she is killed by Lakshman when she intervened with his plan of kidnapping 25 young girls to Calcutta. So, with the help of Chitra, Sanjay sets out on a revenge spree, searching for the murderer of the one love of his life. Yes, the movie's concept has been extracted from "Memento". And during the winter '08, we would be able to see Aamir Khan, in a remake of "Ghajini", with same crew along with Asin. The first half of the movie has enough good light moments, filled with good humor, but the second half actually lacks the entertainment factor, the audience might feel the movie as lengthy in result. Surya does a fine performance & so does Asin. Along with it, she looks very beautiful with her sweet smile, she is an upcoming rising actress for Bollywood. Direction is not really an amazing work. Nothing new with the story, just that it reminds you of 'Memento' & 'Bourne Supremacy'. The songs, they are fine. The track, 'Oru Malaai' is an amazing one, & 'Sutrum Vizhi' is a decent track, rest others are ordinary. The action, not really exciting, apart from the climax action sequence. Hoping that the Bollywood remake would be better, as 'the dependable' Aamir is in a leading role. Watch this one for Surya & Asin.