Assault on Quabus is a Fifth Edition adventure for three to seven 5th- to 7th-level characters. The adventure is optimized for five characters with an average party level (APL) of 5. Characters who completely clear the level should reach 6th level by its conclusion (if not 7th). The adventure takes place in the campaign world of Omeria in The Summer Land region. This adventure is the fourth part of the Into Quabus series and a direct follow-up to Secrets of Quabus. However, you can easily make this a solitary level for your 5th-level characters to visit.