The Blue Diary is the story of Sakshi who moves from small town Dalhousie to big city Delhi. From a sprawling bungalow to a small flat. From the school where she has studied for thirteen years to another- St. Francis. She's not happy. Missing her friends and her old way of life desperately Sakshi tries to hide her real feelings from her parents. She knows it means a great deal to her parents- her father's promotion and this shift to the big city. To make matters worse she makes an enemy at school- Megha- who seems to have nothing better to do than to make life miserable for her. Trying to grapple with these changes in her life, one day Sakshi comes upon a blue diary in an antique trunk with the name Saudamini engraved on it. Saudamini was the name of her maternal grandmother she discovers. And a series of astonishing revelations unfold. Her grandmother was a princess, she learns, whose brother was murdered. Intrigued Sakshi begins to read her grandmother's diary and finds a lonely unhappy girl, not very unlike herself in those pages. And she begins to find parallels between her grandmother and herself. But the diary seems to bring trouble in its wake. Sakshi finds a dark blue car following her from school every day. A courier man tries to force his way into the flat when her parents are out, a hooded intruder breaks in at night. Suddenly Sakshi's safe secure world is topsy- turvy. Who are these people? What do they want? What secret does the faded blue diary hold? And when she finally discovers the secret she is kidnapped. And with her is Megha. The girl who loved to hate her. But Megha has a secret too. She is not the bully Sakshi thought her to be. Just when they arrive at an understanding they find themselves prisoners in the hands of ruthless kidnappers who are after the diary's secret. Now it is up to Megha and Sakshi to find a way out of their predicament. Will they manage to outwit their captors and escape? Will they be successful in preventing the secret of the diary from falling into the wrong hands? Read Blue diary to find out.