From the Kickstarter description:
The manor of Willowby Hall is under siege by a giant, enraged at the theft of his magical goose. A band of thieves has taken shelter within the manor’s crumbling walls, cowering with their ill-gotten poultry as the building shakes itself apart. But something else is stirring. The giant’s rampage has woken a group of revenant knights from their black slumber in the manor’s crypt, and they have called the bones of the manor’s old residents to their side in an effort to drive out the intruders.Will the party manage to loot the manor of its ancient relics, or succumb to the blades of its skeletal guardians? Who will make off with the goose and its golden eggs? Will anyone survive the giant’s onslaught? The only way to find out…is to play.
The Waking of Willowby Hall is a self-contained, 32-page adventure, presented in zine format. It’s designed to work as a one-shot, or to be dropped directly into a pre-existing campaign setting. Its focus is on ease of use, high interactivity, and a dangerous environment that rewards clever play. It will use minimalistic statblocks that are broadly compatible with Old-School D&D systems like Old-School Essentials or Knave, and are easily converted to D&D 5e or other fantasy RPGs.