内容简介：
There's something not quite right about the mysterious neighbour Mr Schmidt. What does he keep in that house and where does he go all the time? Tommy and Maria are keen to find out just what is happening the other side of their bedroom wall. Their over excitement and sense of adventure brings them on an adventure further than they could ever imagine, to the mysterious world of Lyrian. A land so young that not even the sky is painted yet! Will they ever return home or are they doomed to remain in Lyrian forever?