Debraj Roy (Tapas Pal) is an independent MLA of the constituency of Debnagar, which is named after him, in West Bengal, and is regarded as a champion for the poor and one who have idealistic values. When a truck collides with the car his brother Angshuman Roy (Kushal Chakraborty) and he are in, Debraj goes into a coma. Except for his family, everyone else presumes that he is killed in the accident. Years later, his son Abhiraj Roy a.k.a. Abhi (Dev) is a police officer in Mumbai who fights against the mafia and is on a mission to apprehend a Mafia don Guru Nayak (Ashish Vidyarthi) who is involved in illegal drug trade, extortion and arms trafficking.
When he heads to Kuala Lumpur, Malaysia in an undercover operation, he meets Pooja, the daughter of Abhi’s senior police officer, Madhusudan Bakshi (Rajatava Dutta) and soon falls in love with her. She initially rejects his advances which makes him give up. However, he is successful in the undercover operation and arrests Nayak’s brother Bunty (Surajit Sen). After returning to India, he again meets Pooja and, to his surprise, she reciprocates his feelings. In an attempt to arrest Nayak, Bunty and the police commissioner is killed and Debraj’s loyal follower Shivu (Kaushik Chakraborty) reveals to Abhi that Nayak, along with Debraj’s rival, Apurba Ghosh (Deepankar De), and Debraj’s other followers including Jagganath (Sumit Ganguly) and Krishnakanto Mitro (Debesh Roy Chowdhury) were behind Debraj’s accident, which makes Abhi plot to kill all of them.