A bright but faint-hearted rookie cop has to overcome his fears in order to succeed in his first case which sees him partnered with a reclusive senior officer to catch a serial killer on the loose.

A bus named Anbu narrates the stories of its 24 passengers, giving a glimpse of their journey from Kodaikanal to Dindigul.

Trouble follows Kottee, a deaf-mute and hot blooded do-gooder, when he gets a job at a special home for the underprivileged and his quest for justice leads him into conflict with the law and strains his relationship with his sister, Devi.