Four friends from the town of Harihar Nagar reunite after a long time for a fun-filled adventure. Their friendship is tested as they encounter hilarious and challenging situations that bring back memories from their past.

In Harihar Nagar is a comedy movie set in a town where four friends find themselves caught up in a murder mystery. The story involves car-motorcycle chases, beatings, misunderstandings, and a romantic rivalry, leading to a series of hilarious and thrilling events. Along the way, they also encounter a pregnant woman, a new neighbor, and a harmonica-playing romantic rival. Can the friends solve the mystery and escape the trouble they find themselves in?

Four friends check into an old haunted house that gets converted into a resort. Strange occurrences and spooky encounters test their friendship and sanity as they try to unravel the mystery.