Appu is a 2000 Indian Tamil-language romantic action thriller film written and directed by Vasanth.

Seetha is also sold by her uncle to a brothel managed by Maharani, a transgender, as he is unable to repay his debt.

A small flashback is shown where Appu had a sister Saradha (Eashwari Rao) who eloped with her lover a few years back.

Appu vaguely sees the brothel owner from a distance who happens to be Maharani and plans to take revenge.

In the chase, Appu loses his friend Mano (Vignesh) and his lover Pooja (Kaveri), as they both get killed by Maharani.

When casting the lead actor, Vasanth intentionally chose Prashanth, who he felt was stereotyped as a "lover boy", as he wanted to experiment with his acting prowess.

[9] Venky of Chennai Online wrote "Though the songs sound familiar, they are definitely worth a hear".

[10] Malathi Rangarajan of The Hindu wrote "Vasanth has laid a firm foundation by choosing a solid story, though there is nothing novel about it, and the rest just falls in place.Heavy at times, Appu appeals nevertheless".

[13] Malini Mannath of Chennai Online wrote, "A sensitive director of Vasanth's caliber is clearly wasted here.