In this You Choose adventure, the miller's daughter has to turn seaweed into oxygen in a bubble city on a polluted Earth, a middle school student has to complete binders of math problems, and a lonely magical hermit's offers of assistance stem from his desire for friendship--the reader chooses which plot to pursue.

Eric Braun is a children's author and editor. He has written dozens of books on many topics, and one of his books was read by an astronaut on the International Space Station for kids on Earth to watch. Eric lives in Minneapolis with his wife, two kids, and a dog who is afraid of cardboard.