Drona 2010 is about two wealthy families involved in a feud for generations. The spooky part occurs when Kunjunni (Mammootty), who trades ancestral buildings, gets interested in a property that is supposed to be haunted. Ah! Well a protagonist that he is enters the house soon to be killed by the evil spirit in the bungalow.

Enter Mammotty’s second avatar, Kunjunni’s elder brother, chanting mantras with rugged stubble and flowing locks. He vows to avenge his sibling's death by killing the spirit that resides in the house.

The spirit of Savitri (Dhanya) on the other hand has an old score to settle with the Pattazhi family and proves to be a hard nut to crack. So, we see extended rituals, explanation of Vastu and a lot of other things. And, making an effort to give rational justifications to the supernatural happenings in the end proves to be a huge damper