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

Harry was always a curious man. He had a love of magic and adventure, and so when he found an old, rusty door in an abandoned warehouse, he knew he had to investigate. He pried open the door, and found himself in an unfamiliar place. He was in a dark room, with an door that seemed to lead back outside. There was a strange, green light coming from the door, and Harry knew he had to find out what was inside. He stepped forward, and suddenly he was in a different place. He was in a forest, and there was a beautiful girl waiting for him. They rode off on an enchanted horse, and Harry had the most wonderful time. When they came back to the warehouse, the door was gone, and Harry never forgot what he had found.