Picking up the storyline from where Singam ended, Duraisingam has gone undercover after meeting the Home Minister and is working as an NCC officer in a school in Thoothukudi. The only people who know about this operation are the Chief Minister and Home Minister apart from himself.
| Actor | Role |
|---|---|
 SuriyaDurai Singam | Durai Singam |
 Anushka ShettyKavya | Kavya |
 Hansika MotwaniSathya | Sathya |
 VivekErimalai | Erimalai |
 SanthanamSussa | Sussa |
 Danny SapaniDanny | Danny |
 Radha RaviSoundarapandi | Soundarapandi |
 NassarMahalingam | Mahalingam |
 VijayakumarHome Minister Ramanathan | Home Minister Ramanathan |
 ManoramaPattamma | Pattamma |
 YuvaraniDhanalakshmi | Dhanalakshmi |
 RajendranSaghayam | Saghayam |
 Mansoor Ali KhanInspector Karim Bhai | Inspector Karim Bhai |
 Thalaivasal VijaySathya's Father | Sathya's Father |
 Delhi KumarGanesan | Ganesan |
 K. ViswanathChief Minister | Chief Minister |
 SumithraKalyani Soundarapandi | Kalyani Soundarapandi |
 Janaki SabeshKavya's Mother | Kavya's Mother |
 KittyMinister | Minister |
 Nizhalgal RaviThe Assistant Commissioner of Police | The Assistant Commissioner of Police |
 Rethika SrinivasNot listed | Not listed |
 AnjaliSpecial Appearance in "Vaale Vaale" Song | Special Appearance in "Vaale Vaale" Song |
 SriranjiniSathya's Mother | Sathya's Mother |