Bonecrusher (an Orc, now a Giant Orc Chieftain) has found the Gauntlet of Grummsh (an orcish Artifact) and is kicking some serious butt, raising an orc army and is about to invade the country to, er, root, pape, and lillage the area (he's powerful, but he's still an orc.) Of course, the destruction of this gauntlet is very important to the players. Bonecrusher could be considered the Guardian of the Gauntlet, and destroying it will bring curses from Grummsh onto the party.