The film was officially announced in September 2018 with the initial title 2403 Ft.: The Story Of Unexpected Heroes, which was later changed to the current title

Locations span across different parts of Thrissur, Ernakulam, Kottayam, Alappuzha, Idukki, and Kollam districts. Thirunelveli and Hyderabad were significant locations outside Kerala. The major shooting was done in a 15-acre film set situated in Vaikom. Filming completed on 12 November 2022.[8] The flood sequences were shot entirely using practical effects.