Vil Ambu is a journey of two characters and talks about how humans are responsible for each other's loss or gain. The story is about how the loss of one person becomes the gain of the other.
An encounter specialist learns the hard truth that all his encounters have been to protect the interest of corrupt politicians and businessmen.However, before he can control the damage, four innocent people get entangled in his operation.
Saravanan, who has suicidal tendencies, becomes part of Annachi's household as the latter, who has a fear of ghosts, believes that he will help him get rid of it.