Any staircase or door in Emily’s house can lead to another world, so guests are invited rarely. But here, at Lori’s house— the older sister of the girl—there’s a fan who loves to visit them at home. So whenever he comes, Emily is always watching him. One day, her sister and her admirer disappeared! The girl rushed into the room where they’d been, but found only an opened old chest. Is it possible to enter another world this way? And why was that unpleasant boy looking for a path to the magical country?