Welcome to Heap House, the sprawling, slipshod maze of a mansion, built on the “Heaps,” a collection of forgotten trash and curios. Young Clod Iremonger and his eccentric family, the “kings of mildew, moguls of mold,” made their fortune from this collected detritus. The Iremongers are an odd old family, each the owner of the birth object they must keep with them at all times. Clod is perhaps the oddest of all―his gift and his curse is that he can hear all of the objects of Heap House whispering. Yes, a storm is brewing over Heap House and the house’s many objects are showing strange signs of life. Clod is on the cusp of being “trousered” and married off (unhappily) to his cousin Pinalippy when he meets the plucky orphan servant Lucy Pennant, with whose help he begins to uncover the dark secrets of his family’s empire.