“ There was a Beggar he was starring at me as if he is going to kill me but as I get nearer and nearer I found out his resisting something I don't know what but his really resisting something something un explainable and then I saw a knife on his hand and I though his going to kill me but when he raises the knife and then he stoped and said 'run child' that I knew his resisting himself' his blood thirsty self, to stop, to stop killing people at the other day when I go were he was I saw him lying DEAD! and I saw a knife stabed strait throught the heart and that knife was the one he tried to stab on me last day and I knew he KILLED HIMSELF because its the only way to get out of his problems...”
“ With a huge number of sacrificial victims, another realm long ago secretly bound a Prince of the land spirits, Iorstonn by name, thus ensuring the fertility, and improving the magical defences, of their realm. But binding that Prince to one spot has disrupted the weather and magical patterns (ley lines?) over half the continent. Things have become bad enough that a coalition has been formed to rectify the situation, once divinations have established the cause.
Your party is one of the teams assembled to do the rectification: find the binding object and steal it ('so that we can destroy it here in our realm, of course'...*) or destroy it over there. Presumably the Prince will be grateful to his rescuers and angry at the binders, but with a greater spirit like Iorstonn one can never be sure: such beings are 'tricksy'.
* Of course, the rulers of our realm might want to control Iorstonn for their own ends...”