The backdrop is Jodhpur, a place with stringent Army vigilance due to proximity to the border. The subject is the encounter killing of two terrorists in a neighbouring village alleged to be associated with arms smuggling and the death of Major Siddharth Paswan who was shot by the terrorists before being killed. The problem is the villagers who swear at the innocence of the alleged terrorists and demand an investigation into the army affairs. Initially reluctant, Col. Suryaveer Chauhan (Rajat Kapoor) calls on Major Monica Mehra (Jennifer Winget) to file an investigation report about what transpired on the fateful night. He has his skin the game too, as the officer who died was the fiance of his only beloved daughter and he too is distraught due to the loss. It's a simple, open and shut case, where all Monica has to do is interview the two other army officers Shakti Mandappa (Aalekh Kapoor) and Gaurav Shekhawat (Keshav Sadhna), who had backed up Major Paswan and managed to gun down the armed terrorists and submit their version.
Things however, don't turn out to be that simple for Monica. She starts receiving clues and photos about the terrorists and it appears to her that they were known to her interviewees. Also, Shakti and Gaurav seem to be too much in tune with each other, providing specific, accurate and symmetrical descriptions of the events. Instinctively, Monica knows something isn't right. In the meanwhile, after being constantly badgered by her questions, Shakti and Gaurav insist on getting their own legal counsel, and suddenly, Monica has an adversary in Angad Sandhu (Tanuj Virwani), a blast from her past. Determined, Monica pushes harder to get to the bottom of the case as she continues to receive information from various sources that doesn't quite coincide with the story that she has been told.
Code M is reminiscent of "Shaurya" and "A Few Good Men", obviously inspired by them. Director Akshay Choubey unravels the plot very slowly and holds suspense until the very last episode when an unsavoury secret tumbles out of the cupboard, retrieved by Monica, that is based on strong convictions, ideologies, family honour and sexual orientation. Code M is immensely watchable with its 8 episodes back to back. It's fast paced, marked by strong performances and dialogues, and Jennifer Winget nails it in. It is a little unfortunate that Rajat Kapoor couldn't be given his full flow and we fell short of seeing him at his intense best, because the script warranted it that way.