Aha Naa Pellanta (2011)

Subramaniam aka Subbu (Naresh) is an honest, intelligent, kind and hardworking IT professional. However, one night at a party organized by his boss Balaraju (Brahmi) changes his life. Next morning, Subbu finds himself in bed with Sanjana (Ritu) and feels that both got intimate in the night. Trouble begins as Sanjana has got three brothers (Srihari, Subbaraju, Samrat) who are powerful and feared a lot, their father J J (Nagineedu) is another kingpin. Despite all his pleas and requests, Subbu is compelled to get engaged to Sanjana. Did something happen between Subbu and Sanjana that night? Why did Sanjana's brothers target Subbu? All this forms the rest of the story.