Hotel franchise conglomerate Debraj Singh murders his partner Bipasha Mitra's stepbrother, Ashoke. Kolkata Police detective Ekendra Sen solves the case in the hill station of Darjeeling.

While Ekendra Sen was enjoying his vacation in colourful Rajasthan with Bapi and Pramatha, suddenly a professor of archaeology at Oxford University, Shatadru Ghosh, informs Eken about his suspicion on a particular idol he had seen in London went missing. Eken begins his investigation with his two confidantes, where all the mystery facts will baffle him while constantly challenging his intelligence and observation skills. What happens when the situation gets out of hand after finding fake artefacts at the Jaisalmer Museum?

Eken Babu arrives in Benaras with Bapi and Pramatha and soon finds himself entangled in a perplexing mystery. Strange coded messages lead him to a sinister conspiracy threatening the Masaan Holi festival. Racing against time, he must outsmart shadowy figures to save the sacred city from chaos.