Shankar (Chiranjeevi), arrives in Kolkata with the intention of supporting his younger sister Mahalakshmi's (Keerthi Suresh) education. During his time there, he crosses paths with Lasya (Tamanna Bhatia), a lawyer by profession. A particular action taken by Shankar inadvertently endangers Lasya's career, leading to his frustration. Amidst these circumstances, Mahalakshmi develops romantic feelings for Srikar (Sreesanth), Lasya's brother.

Shankar (Chiranjeevi), arrives in Kolkata with the intention of supporting his younger sister Mahalakshmi's (Keerthi Suresh) education. During his time there, he crosses paths with Lasya (Tamanna Bhatia), a lawyer by profession. A particular action taken by Shankar inadvertently endangers Lasya's career, leading to his frustration. Amidst these circumstances, Mahalakshmi develops romantic feelings for Srikar (Sreesanth), Lasya's brother. Subsequently, the families of Shankar and Srikar agree to unite the two through marriage. However, Lasya opposes this union due to her resentment towards Shankar. Meanwhile, Shankar uncovers a human trafficking ring that operates internationally. This organization is headed by Alex (Tarun Arora), whose younger sibling is killed in a confrontation with Shankar. Shankar's rectitudinous, he lands himself in the soup when the affected ruffians decide to murder him for his law-abiding act. To their surprise, Shankar fights back and how? He simply transforms into a cold-blooded murderer and goes on a rampage. Who is Shankar ? What is his past? Why is a killer wearing the mask of an innocent taxi driver? Answers to these questions forms the crux of Bhola Shankar.