So Who Killed My Wife?

I thought my wife was ordinary, but it turns out she's a killer?! One day, 'Iman' discovers that his wife has been cheating on him and is convinced that she wants to kill him, so he tries to kill her first. However, Iman witnesses his wife's death at the hands of a man right in front of him, and at the same time, he becomes a target for killers... To protect him, a killer named 'Film Buff' is hired. To survive and to know the 'real' wife, he must find the person who killed his wife! A spectacular killer action revenge drama between two people who meet anew!