One night at call center is second book of most popular indian writer Chetan Bhagat. It get start in train, were he meets a beautiful girl. After some time, She offers to tell one interesting story . But on a condition that Author write Book on that. Chetan Sir refuse it But after some time they get agree on that. Now the real story get started. This story is about call center and their six employees. Which are Sham, Priyanka, Vroom, Esha, Radhika and retired army Uncle. It having all masala of their love story and their problems in life. Here Bakshi is boss of call center and big problem in their life.At Mid night all 6 are go to pub for hangout and leave their problem. But when they come their vehicle get jam on dead end in construction side at rods and that time the most interesting thing in book get happened. Due to accident the phone has already broke down but the call is come here which is nothing other but "GOD". Everybody get surprised. God give him suggestion to come from their personal problems. After come from that outstanding situation they made revolution by spread a fake news as America is get attack by Computer virus . This news save their Jobs and Made Happy ending. But Chetan Bhagat can not understand how God Call them. They can not digest that thing. But that girl said it is a true story. And suddenly wash out. If any person not interested to read this book then you must watch a film "HELLO".