When Sanju (Emraan Hashmi), a suave, master safe cracker wants to retire from a career in crime, he decides to team up with two dangerous criminals to commit one last heist. A bank robbery that will ensure that he never has to worry about money again. The robbery is successful and everything goes according to plan. Sanju is given the task of hiding the money till things cool down and the booty can be split. Three months later, the associates return to collect their share of the loot, but Sanju refuses to even recognize them! They realize he got into an accident and is suffering from strong amnesia and decide to stay with Sanju and his wife Neetu (Vidya Balan) until Sanju remembers where he hid the money. What dangerous game is Sanju playing? Ghanchakkar is a crazy, quirky rollercoaster suspense ride that aims to surprise, shock and entertain the audience at every turn.