The story of 'Aalamaram' revolves around a banyan tree in the border of a village in Madurai district. Local people believe that the former village controller Karuthapaandi's ghost still persists in the tree and so they avoid going near that tree.

Avantika comes to that place with a plan of staying there for ten days to perform some poojas for her marriage. Hemanth Kumar, a drama artist by profession falls in love with her. As days go by, they start loving each other. They meet under the banyan tree and keep it as a safety watch.

Meanwhile Sadaiyan takes money from two local goons by giving them a false promise that his friend's lover will marry one of them. After knowing the truth, the goons plan to take revenge. How the pair escapes from it is the rest of the story.

Hemanth is pretty ineffective on screen.Though his dance movements are good his expressions are exaggerated. Avantika Mohan is charming but needs to improve her acting. Sadaiyan's dialogue delivery is monotonous.

The director fails to capture the audience's attention. Even the love scenes are not pictured that effectively. Udhayshankar's cinematography and Ramjeevan's music are average.