This was a standard trope of 2 best friends falling in love. Dhanush seemed to be moonlighting in his previous acting skills whereas the other characters had better characterization and acting especially Nitya Menon

The movie with its 2 parallel stories was engaging. However, the second half including the villains became caricatures after a point of time.

I did not get why the mothers were killed or kept preserved in liquid nitrogen instead of being sent out into the world. Why weren't so many women reported missing if they never got out of the facility. Preserving so many bodies and foetuses requires a tremendous amount of liquid nitrogen.

The women need not have been kept in a prison like facility and been sent back out into the world believing that their child was adopted. That would have been less problematic.

I am not sure why the main female villain did not use contraceptives even if her husband refused to.

Samantha looks too made up in all scenes involving fighting and in the facility which would not be typical for a person from her economic background.