Sai Pallavi and Naga Shourya are a couple who abort their child as they are very young in age and also yet to tie the knot. After being separated for five years, they finally tie the knot. But Sai Pallavi does not forget the trauma she went through and always remembers the fact she would have had a five-year-old daughter by now if she did not get her abortion done. The twist in the tale arises when a small five-year-old spirit called Diya enters their life and turns things upside down. Who is this girl? What does she have to do with the couple? and what happens in course of time. That forms the rest of the storyOn the whole, Kanam is an emotional thriller which does not thrill you to a great extent or disappoints you completely.