"One Night @ the Call Center" is a novel by Chetan Bhagat that revolves around the lives of six call center employees working in Gurgaon, India. The story unfolds over a single night, highlighting their personal struggles, aspirations, and the challenges they face in a fast-paced work environment. As the characters navigate their issues, they receive a life-changing phone call that forces them to confront their choices and relationships. The book explores themes of love, friendship, and the impact of modern corporate culture on individual lives, making it relatable to many young professionals.