Complex sentence: He follows Chetta to Chandigarh but is apprehended by CBI officer Ratnavel (Vijayakanth), but once Ratnavel realizes Chetta's true nature, he begins to help Devan, even hiring successful lawyer Chakravarthy (Karthik Muthuraman) to fight for him.
Split into simpler sentences: He follows Chetta to Chandigarh but is apprehended by CBI officer Ratnavel (Vijayakanth). But once Ratnavel realises Chetta's true nature, he begins to help Devan, even hiring successful lawyer Chakravarthy (Karthik) to fight for him.