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

Guy had always been fascinated by the tales of magic and adventure. So when he discovered a mysterious portal hidden in the basement of his old house, he knew it was his chance to finally live those stories. After journeying through the portal, Guy finds himself in a mystical world full of dragons, trolls, and other fantastical creatures. With the help of his new friends, Guy must prevent a great evil from reaching the top of the food chain.