Mei was a curious girl who loved exploring the forest and hills near her home. One day, she found a cave with pretty crystals inside. But when she heard a scary sound, she fell and got stuck in the cave. She felt scared and alone. But Mei remembered the crystals and used them to find her way out. When she came out of the cave, her friends were there looking for her. Mei became known as the "Crystal Girl" and inspired many others in the village to be brave and curious.