Pet Pyar Aur Paap is a social family drama. The movie follows the story of a young woman (Smita Patil), who lives a poor lifestyle with her family and struggles to take care of her siblings and old mother. Later, she falls in love with a handsome boy (Raj Babbar); however, her love life may impose some threat on the wellbeing of her family and herself. The question remains, what will she choose now, love or family?