An Adventure for Children of the Apocalypse
From the introduction:
Prince Taskill of Manchester defected from the realm of Queen Candice of Haverhill because of disagreements with her cruelty in ruling her people. Candice has never forgiven Taskill for this defection, and has enacted multiple schemes to try to lure his followers back or destroy him. Taskill, however, is very popular with his people, even considering his recent alliance with the nearby Isetian cities.
Candice’s latest scheme is kidnapping Taskill and holding him hostage. Her troops have informed Taskill’s seneschal, Dalia, that he will be killed if the people of Manchester do not return to Haverhill. Manchester itself is to become a fortified outpost of Haverhill. Any attempts by the forces of Manchester to rescue Taskill will result in his immediate execution. Dalia has sent word to Peterborough and Charlestown asking for aid in rescuing Taskill; the adventurers have responded to this call.