Raktim, Sohini and Ankita are the three main characters of director Surojit Mukhopadhyay's mini web-series 'Kalo Sada Abcha'. In the series, a courier suddenly arrives to the three characters which contain a book. The name of the book happens to be 'Kalo Sada Abcha' and the author's name is Devmalya Sengupta. The author asks all three of them to read the book. The twist lies in the fact that there is a hidden truth in all the three character’s lives which is very similar to the stories written in the book. So the question arises that how did the author know those hidden truths? The characters try desperately to know this question and while searching for the writer, they come across another individual named Samaresh Lahiri. What is the connection between the author of this book and Samaresh Lahiri? Only the series 'Kalo Sada Abcha' can answer that!
Amlan Majumder has written the story and dialogues of this thriller mini-series. Anir is the cinematographer and Dipanshu Lodh composed the music. Produced by 'Skypan Communication', the series stars Amlan Majumder, Sumedha Dutta, Anujoy Chatterjee, Soumen Dutta, Rishan, Rhea, Asish Sen Chowdhury, Aishin Majumder, Swagatam and Pradeep Mitra.