From the description: The King of Cat's crown has been stolen. Though the cats of the world serve no god (of course), they still pay fealty to the powerful Cat-Sith. Now, his crown has been stolen from its shrine by an unknown thief. If it isn’t found then a powerful artefact will rest in nefarious hands, the guardians of the shrine will be punished, and the King of Cats might just be forced to declare war on canine-kind… 'The King of Cats' is a one-page fantasy adventure designed to be system neutral and compatible with any tabletop RPG, including Heartbreaker.