Adventures in Blackmoor is a role-playing adventure set primarily around the magically-protected Comeback Inn. The game involves a missing king, a time-travel gate within the inn, and various factions vying for control of Blackmoor. Players explore the Inn Between Worlds and the Blackmoor Comeback Inn, encountering numerous characters and creatures. The adventure culminates in a journey through the Prison Out of Time to rescue the king. Background information on Blackmoor's history, politics, and inhabitants is also provided, including detailed descriptions of key characters and locations.