When the Duke of Bari suddenly dies, the neighboring nation of Algarve, long seething over its defeat a generation ago in the Six Years' War, sees its chance to bring Bari into the fold...an action which the other countries surrounding Algarve cannot, by treaty, tolerate. As nation after nation declares war, a chain of treaties are invoked, ultimately bringing almost all the Powers of Derlavai into a war of unprecedented destructiveness.