Viji and his maternal uncle are happy-go-lucky guys who create a nuisance for their neighbours due to their drunken antics. The neighbours try out different methods to escape their antics, but in vain. One of the neighbours, Karthik, who is a doctor by profession, comes across nurse Maya, whom he is in love with. However, when Karthik tries to express his love, he is beaten black and blue by a mysterious ghost. After finding out details about Maya and the ghost, the doctor and other neighbours plot against Viji to make him fall in love with Maya and let the ghost take care of him. Injured in a fight, Viji, seeking a physiotherapist's help, falls in love with Maya, who was engineered by his neighbours. Things take a twist, and Viji is thrashed by the ghost. Viji finds out that Maya's father Garudaraja Bhattadhri is a powerful magician in Kerala and that he had set the ghost to protect Maya. Viji sets out to Kerala to convince Maya's father, along with his uncle. They insult Bhattadhri, and he sets out to do a pooja to harm them. To escape that, they ask for Chakra Mahadevi's help. It turns out that both Bhattadhri and Mahadevi are fake and that there is a real ghost protecting Maya. They go to a black magician, where he reveals the flashback about the ghost.

In 1857, a British man named George Williams went to India, where he seduced girls and ruined their lives. Due to a job transfer, he came to Kerala, where his lustful gaze fell on Devyani Kutti, but he was unaware that she was the daughter of the king of black magic, Marthanda Varma. Soon, Marthanda Varma learned about George, so to kill George, he took the great Yatchi palm script on a pournami day and gave an order to Yatchi to protect his daughter. That night, George proposes to Devyani and at that moment, Yatchi killed George. After British left India, he stuffed Yatchi into an idol and buried it.

After that, Maya's father says that he has a similar Yatchi in his house, so the magician does some pooja to determine whether it is active, so that time it is active. To kill the Yatchi, they need to retrieve the palm script from the bungalow where Maya's father took the Yatchi. Viji and others had various encounters with other ghosts there, and then they finally retrieved the palm script and killed the ghost. The end credits show Viji and Maya's marriage.