Kalo Bhromor is a homicide thriller through which Hari the caretaker of the visitor home Kalo Bhromor and Saathi, the daughter of the proprietor of the Kalo Bhromor are murdered and Smriti, Saathi’s sister is raped. Smriti and Saathi’s sisters Saswati, Srija, Nilabha, Saswati’s husband, Sabuj, Nilabha’s brother are the suspects with different residents of the visitor home. The story unfolds regularly to uncover the actual wrongdoer.