Nikhil and his family have just moved to Dehradun, a small valley town in India.   In Dehradun, Nikhil meets a group of children, roughly of his own age – Ishaan, Neha, Shreya, and Arjun. There's a circus in town, but when the group visits the circus, events take a strange turn. They get tangled up in a series of robberies and begin to suspect that someone from the circus is responsible. The children form the Private Investigators (PI) Club to investigate the robberies, and are determined to solve their first case. Will they be able to uncover the perpetrators?

PI Club and the Circus is a fast-paced mystery story, with several twists and turns.  It is suitable for children in the age group of 7-12 years.