maa aayana sundarayya (2001)

Bangaru Sundaraiah (Srihari), an attendant in a bank, shoulders the responsibility of bringing up his brothers as he has promised to his mother on her deathbed. Though he is the second of three brothers and a sister, the mother chooses him as she believes that the eldest is the innocent kind. Sundaraiah brings up his kin so lovingly that they address him as daddy and not as bhayya! His love for his brothers Sambasiva Rao (Aahuti Prasad) and Venkateswara Rao (Brahmaji) is so unselfish that he sacrifices his job in favor of his younger brother, his provident fund money for his elder brother's business and his pension for his sister's marriage. 

The brothers are the usual greedy type who, when the family's position gets tough, try to disown the brother and his wife. Soon realizing his folly, Sundaraiah decides to teach them a lesson. And so he sells his house for a handsome amount of Rs 70 lacs and starts living in opulence, refusing to share the money with his brothers. The latter, in a fortuitous turn of events, lose their riches and are on the verge of penury. Do we need to tell you the rest?