Mohan Chabiwala, a key-maker, holds the key to dark secrets behind locked doors, blackmailing women to satisfy his desires.

Behind every locked door is a dark secret hidden, and Mohan Chabiwala holds the key to every such door. Mohan works as a key-maker, and in the process of doing so, he unravels some dark secrets of the women for which he works and then blackmails each one of them to get his sexual desires fulfilled.