Bejoy Nambiar’s Kaala moves along two parallel storylines. On one hand, you have an IB officer named Ritwik Mukherjee (Avinash Tiwary). This is set in 2018.
One of the few positive aspects of Kaala is the portions involving Rohan Vinod Mehra. His scenes have emotional resonance and you feel for the plight of Subhendu Mukherjee.
The biggest problem with Kaala is the back and forth dealing with multiple characters that float in and out. Bejoy Nambiar does a lot of globetrotting, which adds no value to the series.
There is also a subplot dealing with homosexuality — involving one of the villains (Jitin Gulati). It is not just poorly placed but has been written with zero nuances.
To sum it up, Kaala is a big black mark in the filmography of Bejoy Nambiar who is capable of doing much better stuff as we have seen in Shaitan (2011) and Wazir (2016).