Sanjay Gupta's back and yet again with a Hollywood film rip-off.  Taken from Hollywood’s 2006 psychological crime-thriller Unknown, Acid Factory too begins with the protagonists trapped in a chemical factory.
Admittedly, the plot arouses interest: you have six people trapped in an acid factory, and here's the best part—they don’t remember a thing.  Suffering from temporary amnesia, all six have forgotten their identities and how they got there. They get their clues from phone calls made by a mob boss (Irrfan Khan) and wonder who among them is their friend or the foe.
A cop (Gulshan Grover) is following Irrfan Khan’s lead and keeps losing trails blaming the criminals for being "bloody clever or bloody smart" without admitting he's bloody dumb. The film then takes the predictable course – the six understand that a kidnapping has happened and try identifying the kidnappers from the hostages. This is the most interesting portion in the film that you wish was further exploited.