The party is a group of close friends who are going through their respective adventuring schools at the same time. Through the infinite powers of arbitrary coincidence, they are all graduating at approximately the same time.
The schools work together to arrange the Final Exam for the graduating students. The type of exam varies. Some involve actual missions, some involve intellectual challenges, and some involve artificial situations mundanely created. Then, there are the final exams for those suicidal twerps who decide to be adventurers. For them, something special is created...
An introductory adventure for brand new characters.