In the gray world of Ragged City, Hu Tiegen's tin shed hides more secrets than dust - he specializes in the "rebellion" of objects, from a vending machine that steals chocolates to a calculator that calculates interest. He is used to seeing objects that turn into spirits, but he fell into the hands of an urn. In this place where even the dust has its own temper, the most indispensable thing is trouble, and the most terrible thing is - every trouble comes with a rumor that cannot be investigated in detail.