The narrative centers on Rajaram (Anshuman Jha), an aspiring author in a remote valley whose serious literary work is rejected as "boring". After a friend introduces him to the world of adult films, he begins drawing inspiration from his own real-life encounters and fantasies to write "masala" stories.

The impact of "Mastram" on Indian cinema is likely to be significant. The film's success has paved the way for more bold and explicit content in Indian cinema. However, it has also raised questions about censorship and the depiction of sex on screen.