This book is a picture book that teaches children how to adapt to the new environment. Louis moves to another block with his parents, and he has to part with his beloved friends. In order to dissolve his grief and loneliness, he gives play to his artistic talent and makes a perspective model with a show box, with cardboards cut into the appearance of his former block and put into in the shoebox. This small perspective model has a magical effect, as he can take his thoughts back to the past, and to his old friends. However, when memory is over, Louis still needs to face the real, new life and adapt to the new collective. On Halloween, Louis is to make the first step of facing the new life. A companion volume to Louis, this book still features Louis, and now Louis is more grown up and more cheerful, has friends, and is facing the new life more bravely.
路易跟随父母搬去了新街区，他不得不离开心爱的小伙伴。为了排解悲伤和孤独，路易发挥他的艺术天分，用鞋盒做了一个透景模型，把卡纸裁成过去生活的街区的样子，放进鞋盒里。这个小小的透景模型有神奇的作用，能把他的思绪带回过去的时光，能把他带回老朋友们的身边。在回忆里，他和小伙伴们一起游戏、过万圣节。但是，回忆结束，路易要面对真正的新生活，融入新的集体。这天正好是万圣节，路易要踏出他面对新生活的*步。
当路易穿上变装服加入新朋友当中时，所有人都友好地面对着他，这让他有了被接纳的安全感。