basically
archana is not educated because she gave up studies to take care of the household when her mother was sick.
so basically that is why she couldnt get a groom that makes a decent living because she is not educated.
Her mom thought she could find a rich groom for her because she thought that she is sooo good with the houseowrk and a is a good person (wht my mother in law wants lol)
so her mom kept trying and when they did find a groom (satish), manjusha (vinod's wife-vinod is archanas brother) was jealous so she and her family plotted something where archana would look characterless in front of satishs family. (The way they did it was they sent her to a brothel house and they got pics of her going there-and archana being so dumb fell for it)
Manav is a mechanic who is in love with Archana..he saw her in a train and fell in love with her and then found out who she was and where seh lived. He found out about that she was going to get trapped in the brothel so he followed her and saved her when there was a raid at the brothel.
Anyways Manju told Manav that he should lie about his status cuz her mother in law (Sulochana) is coo-coo and wants to find a rich guy for Archana which would never happen and Archa just wants a husband who loves her but cuz of her mom she has to suffer. So Manav and his family lie about him being a mechanic and say tht he is a owner of the garage.
And they get married.