Most trolls enjoy playing tricks on people they meet during the night. Johan, the rainbow troll, enjoys making beautiful rainbows for people in the brightest of sunlight. But Johan lives at a waterfalls deep within the mountains where not many people venture. This story is about how he fulfills his dream of making beautiful rainbows for people by leaving the security of the falls. But he soon finds out that life in the real world is not the same as back at the falls. The story is not only fantasy, but is a good teaching tool for the study of rainbow formation and colors.