Margaret needs a new start in life, and the bookshop she inherits from her late uncle provides the perfect opportunity. But when a strange man in a white coat emerges from one of the books in a vortex of swirling words, Margaret gets the excitement she was looking for. She had always dreamed of going on an adventure like the ones she read about in books, but never thought she would actually be able to visit these fictional worlds! This is exactly what the man in the white coat offers her-a chance to see the worlds she loves first hand. Before Margaret has a chance to make up her mind about whether or not to go, the man in the white coat disappears into the children's book Mecha Arms Fighter: Heinsrick's Vengeance with the promise to return again soon. But when another vortex appears and the book's child villain, Tidus Heinsrick, steps into the real world, Margaret knows something isn't right. She must enter this world dominated by two children-Heinsrick and the hero Mecha Arms-and save the man in the white coat. The only problem is that he seems to be working with the story's villain...