The plot revolves around a British soldier by the name of James Jensen who finds himself to be the reincarnated form of a powerful sage from the past.
[1] In India, the British Imperial army is fighting the natives and a group of Robin Hood-like bandits called the Dakaits.
In England, a young man named James is working in the docks of London with his younger brother William.
His brother gets a job on a certain ship and while James bids him farewell, he is approached by a soldier who offers him a chance to join the British Indian Army in India.
While escaping within the jungle, he finds a band of Indian killers whose leader, Dada Thakur, saves him by using manipulation of reality powers to shrink James to the size of an atom.
Colonel Townsend is reprimanded for the casualties suffered and in order to cover up, he lies by stating that an insane James was to blame as he killed his wife and child and allowed natives to enter the encampment.
James begins his training with Dada Thakur who tells him that reality is ultimately a perception and hence through his mind, he can change what he perceives.
He learns how to obtain enhanced speed, phasing, advanced fighting capability, time manipulation and even absolute concentration.
[6] The professor tells James that Townsend may have gone to a Kali temple and therein worshiped the destructive side of the goddess thus becoming a demon Sadhu.
James takes his leave after being informed by the professor's daughter that Townsend has established a deep power base within the London underworld.
James meets his brother and tells him of Tess's death and Townsend's part in it but William refuses to take him to the Colonel for fear of being killed.
However, after his family's murder, he meets an enigmatic mystic by the name of Dada Thakur who tells him that he was a sadhu before he was James Jenson.
After murdering James' family, he prays to the dark side of the Indian goddess Kali thus becoming blessed with extreme powers.
The Sadhu is based on Eastern (Hindu) concepts such as karma, shakti (the female embodiment of the Goddess) and the four stages of living.
The idea of reality being a perception plays a dominant role as James constantly confesses to a feeling of familiarity when he should be a stranger to the foreign lands that he visits.
[10][11] In early 2014, it was reported that a film adaption would be co-produced by Mark Canton of Atmosphere Entertainment with Sharad Devarajan and Gotham Chopra of Graphic India.