Prompt: Write a short story about a man who discovers a magical portal

Adam’s day was going as usual, until he stumbled across a strange portal. Once he stepped through, he found himself in a strange new world, with creatures he had never seen before. He quickly realized that he was in danger, and he had to find a way back home. He started searching for the way back, but he didn’t have any luck. He was about to give up, when he found a strange book that said he could find the way back if he followed the instructions. He started reading the book, and soon he found himself in another strange world. He was successful in finding his way back home, and he was able to save the day.