Reshmi Menon and Santhosh Prathap are happily married, yet they live far away from their families, as it's a love marriage. Few months later, Reshmi gets pregnant, and Santhosh is positively elated. But, days get difficult as he couldn't see his wife struggling to take care of her self all alone. So he goes to Sri Lanka to convince his mother-in-law and to bring her back to their home, so that she will be a support to his wife. 

Sri Lanka at that point of time was a complete war zone, and after he reaches there, he gets to know that his mother-in-law has died in a bomb blast. Soon after that, he gets caught in between all the crossfire and is unable to return back to India, and to his wife. Santhosh who is stuck in Sri Lanka for almost more than four months, one day saves the life of four hostages; Jagan Purushottam, Lollu Sabha Jeeva, Rajendran, and Barani. 

The five of them then try their best and after several attempts they successfully escape the warzone. Once they are back to India, Santhosh calls the four of them to his home, and insists them to stay with him and his wife for a while. The loving couple are reunited and are also blessed with the birth of their baby, and this is where the story kicks in.

Suddenly, people around Santhosh tell him that his wife died during childbirth when he was away at Sri Lanka. Santhosh gets furious and dismisses it all as rumours. In the meanwhile, the four rescued friends are positive that there is a supernatural presence around or within Reshma, as they have all noticed her acting weird. One of the friend tentatively opens up about this to Santhosh, and though he gets angry for proposing such an idea, he agrees with the them, and decides to rope in an exorcist, Kovai Sarala, to find out the truth. The rest of the plot revolves around finding out what is actually happening around them and whether Reshmi is haunted or is a spirit in the form of a human.

Santhosh Prathap has acted well as a loving husband, but could have acted a little better when it comes to expressing fear and grief. Similarly, Reshma looks as pretty as usual, and has also performed well, but could have been more intimidating. Kovai Sarala's appearance elicits smiles, but her jokes are worn out. The rest four supporting actors; Jagan Purushottam, Lollu Sabha Jeeva, Rajendran, and Barani has done a good job.

Director Jawahar, has attempted to make a horror comedy flick, but has failed to keep the audience hooked to the story, due to confusing screenplay, poor fear factors and graphics, even though he had included a few twists and turns. Sathya has scored the music, and he has done a good job with the background score. Mahendran's cinematography skills come to the fore and it is definitely an advantage for the movie.

In short, Bayama Irukku, bayama irundhurukalam.