The proudly declared moral of Gentleman is that men will be men and mice will be mice, but audiences always have 4 legs and a tail. However, you don't realize this all at once. The last part of the moral hits you first, in the beginning itself. Muddu Krishna (Posani), the protagonist of the movie, has just donated his liver to his wife Neeraja (Aarti Agarwal), but survives enough to yak about how much he loves her and wants her to live.
The flashback reveals why things turned out this way. MK's brother had stabbed Neeraja when she was cavorting with a boyfriend, and that is why she....