Composed in the 18th century by a Tamil scholar named Therthapandiyar, Tamil Olu Kathai is a 244-line poem that tells the story of the origin and evolution of the Tamil alphabet. The text is written in a unique style, blending poetry, history, and mythology.
A collection of 1,330 couplets (Kurals) dealing with virtue, wealth, and love. It is considered one of the greatest works on ethics and morality. Silappatikaram
It seems like you're referring to a Tamil film or a project titled "Tamil Olu Kathai". Unfortunately, I couldn't find any information on a well-known or prominent Tamil film with this exact title.