The younger daughter of actor Anil Kapoor, Rhea is adapting the book into a full-fledged screenplay.
The 25-year-old sibling of actress Sonam Kapoor will announce her movie's cast soon, said a source.
"Herogiri" is an Indian take on the superhero genre. It is said to be a racy, action-packed novel about good and evil, power and corruption, love and violence.
The narrative follows the life of Arnab Bannerjee, a shy 25-year-old, who has little excitement in his life other than tracking down missing books as an assistant librarian in a Delhi University college.
But everything changes the day he awakens to discover superhuman powers within him. He begins his crusade against eve-teasers, highway robbers, corrupt policemen, and scheming politicians and their goons. But his most challenging mission is to thwart a deadly terror attack on Delhi.
Over time, he realises that to succeed he has to become a part of the very system he hates. How he fights for his mission and whether he sticks to his ideals is the mystery element in the story.