You defeated the Puppeteer without a definite clue to lead you to the Seal Stone of Victoria Island. But then, Tru flashed a comforting smile as if to tell you not to worry about a thing...
Tru says he's found hints of the Puppeteer, and that the puppeteer is hidden in the Puppeteer's Hideout somewhere in Golem's Temple Entrance. He gave you the greenlight to finish off the Puppeteer if you run into him again...