Left in the care of an alcoholic Gangu Ganpat, young Heera, who named himself after a stray dog, wrestles with life in his young age. Years later, now a young man , he works for Mahendar Singh and is in love with Mohini, who will not have anything to do with him due to his lack of ancestry. Heera is now determined to find out who his parents are, and the only one who can help him is the elusive, alcohol-induced and incoherent Gangu Ganpat.
Amitabh Bachchan
as Heera
Zeenat Aman
as Mohini
Amjad Khan
as Ranvir Singh
Rakhee Gulzar
as Vidya
Ranjeet Bedi
as Mahendra Singh
Bindu Desai
as Kamini
Shreeram Lagoo
as Gangu Ganpat
Suresh Oberoi
as Ram Singh
Goga Kapoor
as Phuga
Padmini Kapila
as Padma
Jeevan Dhar
as Lala
Mukri
as Gaffoor Bhai
