"No more let sins and sorrows grow,
Nor thorns infest the ground;
He comes to make His blessings flow
Far as the curse is found,
Far as the curse is found,
Far as, far as, the curse is found."
--Isaac Watts, "Joy to the World"

• The kingdom rejoices when a powerful druid steps forth from seclusion to aid them in pushing back a cursed blight of malignant thistles and weeds that threatened to destroy vast swaths of farmland. However, despite initial success against the foul blight, recent progress has been slow. The PCs are informed that the curse is being maintained almost as fast as the druid can dispel it; he and whoever is controlling it have come to a stalemate. Moreover, he cannot venture into the blighted lands himself or the curse will rapidly overcome the rest of the kingdom. Stalwart heroes are needed to venture forth, into dead land, and root out the source of the curse.
• When a small cult opens a planar gate allowing a vrock to enter the material plane, the Heavens dispatch an angel to defeat the demon. However, the angel is struck by the wanton corruption of the humanoids, and after a warning that goes unheeded, brings the justice of the blade to bear against the mortals. Meanwhile, the vrock ravages the countryside, leaving corpses tangled in Abyssal weeds as the only sign of its passing. In the ensuing panic, what will the PCs do?
• After gaining some respect in the kingdom for fighting off the forces of destruction, the PCs are vested with royal authority by the king himself and given the task of seeking out sources of corruption and anarchy. This seems well enough at first, until every peasant in the land begins coming to the PCs with their problems and, even worse, they get blamed for every crime that happens because they weren't there to stop it. The king still trusts the PCs, but how will they deal with a kingdom full of dissatisfied serfs?