Aa Dinagalu is the romantic movie. In which Chethan (Chethan), son of businessman. He falls in love with dance teacher Mallika (Archana). His father opposes their affair and seeks the help of underworld don Kotwal Ramachandra (Sharath Lohithashwa) who tries to separate them but in vain. Unknowingly, Chethan falls into the trap of the underworld and seeks the help of Jairaj (Ashish Vidyarthi) to kill Kotwal.