Moti (Amitabh Bachchan) collects the syrup of date trees and takes it to an elder widow Mahjubhi (Nutan) who makes excellent gud out of it. Moti's gudsells well in the market. Moti falls in love with the beautiful Phoolbano (Padma Khanna). But her father asks for a meher (dowry) of 500 rupees which Moti is unable to pay. To save the labour, he marries Mahjubhi and extracts extra work from her to make more gud. Moti sells the extra gud and saves more money. Mahjubhi takes care of Moti lovingly and makes extra gud for him very happily unaware of his ulterior motive. When Moti saves enough money to wed Phoolbano, he divorces Mahjubhi accusing her of infidelity. Mahjubhi is very hurt when she finds out that Moti had decieved her. Then Mahjubhi also remarries a widower with 3 children and goes to live in another village. In the next gud season, Phoolbano makes such awful gud that nobody buys Moti's gud. Instead they scorn him and he loses his standing in the market. In the end, Moti goes to Mahjubhi and requests her to make 2kg gud for him so that he can sell something that season.. When he sees tears in Mahjubhi 's eyes he understands the depth of her love for him.