Katie - A young, spirited girl full of curiosity. She works at an old bookstore in a small town and dreams of adventurous escapades. Katie often dreams of exploring new places and fantasizes about a more adventurous life beyond her current surroundings. She regularly immerses herself in books recounting thrilling adventures and envisions herself experiencing similar exploits. One day, while tidying up the bookstore, Katie stumbles upon an ancient, peculiar book hidden deep within a shelf. The book is titled "Stepping into the Light