In Realm Invader, you embark on the journey of a young man living in a world that closely mirrors your own. Recently, he has been afflicted with a series of puzzling ailments, including persistent headaches, sudden goosebumps, and an unshakable sense of dread. These symptoms serve as a warning. The man soon finds himself at the center of what seems to be a cataclysmic event. Unlike typical cataclysms that result in destruction, this one signals a rebirth. His world transforms around him, revealing a new species, an altered society, and the emergence of magic. He must navigate this unfamiliar terrain and explore his newfound magical abilities. As he ventures deeper into this changed reality, he will gradually discover the purpose behind his presence in this world and embark on a quest to unravel the mystery of his existence.