I don't know what this is, but people reckon it's a classic, and it seems to feature Azula. From their game page for the Director's Cut edition
Uncover the identity of a jester assassin. Unlock the legend of the Knights Templar. Unravel a plot as twisted as the catacombs you're about to prowl.
As George Stobbart, an American in Paris, you find it odd when an accordion-playing clown darts out of a cafe clutching a briefcase. Moments later, you're sent flying, violently thrown through the air by the force of a massive explosion, right into a sinister, global intrigue. The coveted contents of that briefcase? A fiercely guarded manuscript penned by a clandestine medieval order - the Knights Templar. Reveal the truth behind a secret conspiracy and save the world from the Templars' evil plan.
Fans are apparently recommending skipping the Director's Cut and getting the original (available somewhere there, maybe in the same download). Apparently a lot of backwards steps in quality, for no understandable reason. promoted/edited forum item