Watch Thodisi Bewafaii (1980) Official Trailer

Arvind Kumar Choudhary is widowed, respectable and wealthy businessman, who lives with his only son, Arun, in a palatial house. He re-marries another woman, Sujata, who is a widow, with two daughters, Veena and Seema. Arun does not respect her and refuses to even speak with her. Arun meets Neema Deshmukh and both of fall in love. With approval of their respective families they get married. Then things start to slide financially for the Choudharys when Arun accidentally breaks a valuable diamond while daydreaming about Neema; the Choudharys lose all their savings, building, vehicles and property, move to a shanty apartment, and Arvind passes away.