The actress will essay the character of a woman, who is trapped in the world of many unfolded mysteries, the audience will see her juggling around two different worlds.
The film will capture the illusions of her presence in the past and the present in different looks without exploring the double-role personality.
The film will follow her struggle of finding the answers to the mysteries around her as she takes the suspense of the film ahead.
'Dobaaraa', which also reunites Taapsee with her 'Thappad' co-actor Pavail Gulati, is produced by Shobha Kapoor & Ektaa R Kapoor's Cult Movies, a new wing under Balaji Telefilms and Sunir Kheterpal & Gaurav Bose.
The film, which has already captured the cinephiles' attention, is set to hit theatres on August 19.