The movie "Kaththi" revolves around two prisoners, Jeevan (played by Vijay) and his friend, who escape from the prison. Jeevan, a poor man, was wrongly accused and imprisoned for a crime he didn't commit. The two friends plan to reform a corrupt politician, Ma. Thegavan (played by Aadhavan), who has been exploiting and oppressing the people of a village.

As Jeevan and his friend try to bring down Thegavan, they encounter various obstacles, including the politician's henchmen and the police. Along the way, Jeevan befriends a TV reporter, Vasuki (played by Priyamani), who helps him in his mission.

If you're interested in watching "Kaththi," I recommend opting for legitimate platforms like Amazon Prime Video, YouTube (rent or buy), or purchasing a DVD/ digital copy from authorized sources.

The movie received positive reviews from critics, praising Vijay's performance, the film's engaging storyline, and the social message it conveys. The movie was a commercial success, grossing over ₹60 crore at the box office.

As for TamilYogi, it's a popular piracy website that uploads Tamil movies, including "Kaththi." However, I strongly advise against using such websites for downloading or streaming copyrighted content, as it promotes piracy and may harm the film industry.