Aaftab (Ajay Devgan) and Dhananjay (Saif Ali Khan) are two step brothers who meet for the first time, when their father is on his deathbed. They both have a selfish approach to life; Aaftab is a petty smuggler whilst Dhananjay is a corporate yuppie from the city. When the brothers meet for the first time, they instantly loathe each other, having nothing in common. One night, Aaftab blows up a loaded truck while trying to steal from it and attracts a mass of unwanted enforcers. Soon, both end up being handcuffed and are trying to escape from the BSF, the CBI and the border mafia, who are attempting to incriminate the brothers for anti-national activities and a murder. Despite their initial differences, will the two mend their ways and bond together?