This is one of the seven lessons given to the Princess by Master Nathan at the beginning of the story. During the lesson the Princess is meant to learn stealth and sneaking. The quest is originally received from Nathan, but the Princess must talk with Drago to learn the details, and report to him once she has succeeded in crossing the sewers. During the course of this quest the Princess will have encounters that are relevant to other quests as well as will meet for the first time Tony, which will allow the Princess to choose to take Tony the Tiger optional quest.