The protagonist, named Bobby Pendragon, uses a portal like thing called a flume to go to the territory called Cloral ( territories are like planets) in pursuit of the antagonist Saint Dane. In the water planet, Pendragon and is Uncle Press explore to find out what the "turning point" of this peaceful planet is. They meet Spader, who will be revealed as the traveler of Cloral (every territory has a traveler) and find out that all of the crops in Cloral have been poisoned. The protagonists search for the lost city of Faar to stop this. But, soon after they get there, Saint Dane starts destroying the city. Because of this, water vehicles meant to heal the poisoned crops are unable to escape, and Uncle Press and others are trapped with them. Bobby and Spader rescue Press, but when trying to stop Saint Dane from escaping Cloral, Uncle Press dies to save Spader's life.