There is a kind of magical profession in this world.——They are collectively referred to as imperial masters. There is also a kind of magical items.——They are called holy objects. There are magical keys that can go anywhere. There are masks that change appearances. .Has a flashlight that can zoom things in and out. Has feathers that can fly freely. Lin Shi, a famous detective scientist, came through time travel. In order to find out the murderer of his family, collect holy objects, and explore a hundred years of blank history, he decided to go to The road to becoming a royal master.