Indran suffers from narcolepsy, a sleep disorder that makes him fall asleep at the slightest excitement. He meets Meera and they fall in love but one night, they are attacked by unknown persons. Indran panics and goes into sleep, while Meera is raped. Indran must rely hard on his wits to find the assailants and overcome his condition get his revenge.
Unfortunately the movie Naan Sigappu Manithan is not yet available on Disney Plus.
| Art | Jacki | Art Direction |
| Directing | Thiru | Director |
| Production | Vishal Krishna | Producer |
| Production | Ronnie Screwvala | Producer |
| Production | Siddharth Roy Kapur | Producer |
| Editing | Antony L. Ruben | Editor |
| Camera | Richard M. Nathan | Director of Photography |
| Production | Amrita Pandey | Co-Producer |
| Writing | Thiru | Story |
| Writing | Thiru | Screenplay |
| Sound | G. V. Prakash Kumar | Original Music Composer |
| Sound | Megha | Playback Singer |
| Sound | G. V. Prakash Kumar | Playback Singer |
| Sound | Gaana Bala | Playback Singer |
| Sound | Dinesh Kanagaratnam | Playback Singer |
| Sound | Vandana Srinivasan | Playback Singer |
| Sound | Saindhavi Prakash | Playback Singer |
