It all starts off in Banaras with Bigg Boss (Danny), who runs a transport business under whose disguise he is a contract killer.
He gets into a brawl with the other gang but who supports him in the battle is younger BOSS.
BOSS is left by his idealistic father Satyakant Shastri (Mithun Chakraborty) because of his short tempered behavior.
But Bigg Boss takes him under his wings as he joins his business and becomes an efficient Haryanvi gangster. The flick moves 15 years ahead. Satyakant's younger son Shiv (Shiv Pandit) comes to Delhi where he falls in love with Ankita (Aditi Rao Hyadari) but this invites trouble from her elder brother Ayushman Mathur (Ronit Roy), a cruel cop. So the BOSS (Akshay Kumar) has to return to rescue his brother and to help him get his true love.