Merlin and a group of his friends were at their middle school on the night of the Fall Festival. Ms. White, a long-term substitute teacher, showed them a mirror and told them to look into a mirror and think about whatever they saw. The magical mirror gave the students a curse or blessing based on how they saw themselves in the mirror. Unfortunately, it was Halloween when they looked into the mirror, and everyone was wearing costumes. If they saw themselves as shorter than their friends, they might start getting shorter each day. If they thought they looked strong, they grew stronger each day. Merlin was dressed as his hero, Merlin the Enchanter, and imagined that he could do magic as well. Unfortunately, a friend was not so lucky. He had to either help his friend and risk losing his powers or forget about her and keep the powers of the mirror. Unfortunately, he and his friends were not the only ones who looked at the mirror. Another group of students had also gained powers from the mirror. They felt no need to help the cursed friend and decided to stop Merlin and his friends from getting to the mirror. Will he risk losing his powers to help his friend? Can Merlin and his friends save the cursed friend, or will they be stopped by the other students?