The narrative of Chhotolok kicks off with a mysterious death that pulls various characters into a vortex of investigation and moral ambiguity. Unlike traditional whodunits, the series focuses heavily on the "why" and the societal structures that push individuals toward crime. It explores jealousy, lust, and betrayal.
Raja Bhattacharya (Gaurav Chakrabarty), a married man who was having a steamy affair with Rupsha to escape his failing marriage, becomes the primary suspect in the murder.