It's essentially a serial murder mystery that the film attempts to unfurl. A reconciliation with wife Deepthi (Priyamani) seems out of question. He's a divorcee who gets to see his teenage daughter twice a week, and has had enough of living life alone. Chadrasekhar (Mohanlal) is an officer who has assumed charge of the Metro Crime Stopper Cell, and who finds it extremely difficult to keep things in focus. Unfortunately we thereby have an enterprising leading character moving about on an all too familiar ground that's strewn with chestnuts. B Unnikrishnan's 'Grand Master' does try hard to rise above the run-of-the-mill crime thrillers by having as its protagonist a once-firebrand cop who has fallen on evil days.