The fairy tale is based on real stories of people who underwent a session of regressive hypnosis. Memories from past lives confirmed the legends and myths about the existence of dragons. The possibilities of changing our thinking and the power of controlling thoughts also did not pass by the adventure heroes. The format of the original information from the subconscious immersion sessions was modified for children's perception. Feedback from children and adults was collected. The children really, really liked the fairy tale, but the adults noted that this story can be called not only therapeutic, but also instructive for many adults. I hope that the secret of the rainbow dragon will leave a mark in your heart and thoughts, too, dear reader. Enjoy your immersion in the fairy-tale world that lives in each of us!