A young truck driver Ajit’s (Dharmendra) tragic past returns to haunt him, when his dying mother reveals that he is an adopted child and that his real parents have been massacred by a dacoit, Bharat (Ajit). He swears revenge and sets out in search of the deadly killer. The film co-stars Hema Malini and has Keshto Mukherjee and Johnny Walker providing comic relief, while old-timer Pradeep Kumar plays a supporting role. Music by Laxmikant -Pyarelal is notable mainly for the roistering ‘Main Jat Yamla Pagla Diwana’.