The film stars Kunchacko Boban, Eesha Rebba, Aravind Swamy, and Jackie Shroff.

[4][2] The film starts with Kichu, a happy-go-lucky guy who wishes to move abroad with his girlfriend Kalyani.

With the help of his father Chachan, Kichu is given a suspicious task from a group of people who are willing to pay him money to befriend a lonely man.

They reveal that the lonely man is David, a gangster who lost his memory in a shootout in Udupi with confidential information about Rs.

Kichu awkwardly approaches him in many ways and finally succeeds in becoming friends with him and starts calling him "Anna" (brother).

Kichu plans a road trip with David by convincing him that he has to deliver a car consignment to Udupi.

On the way from Mumbai to Udupi, they stop at Goa to chill and end up in an intense fight with a drunkard who gets beaten up by a drunk David.

David takes a van and sits to remember a promise he had made to Asaianar's wife that he will kill Asainar.

[7][8] On 17 March 2021, it was announced that Telugu actress Eesha Rebba would be playing the female lead opposite Boban which marks her debut in both Malayalam and Tamil cinema.

[9] The film was produced by actor Arya under the production banner August Cinema and The Show People.

[16] Anna M. M. Vetticad of Firstpost gave the film 1.5 out of 5 stars and wrote, “Ottu has a premise with potential but starts sputtering early on in the absence of a worthwhile script.

"[20] S. R. Praveen of The Hindu wrote after reviewing the film that "The way Ottu proceeds does not make one excited enough for the promised prequel and the sequel.