The plot is extremely generic. Find the broken pieces of the talisman that will defeat the ancient evil. You've seen it before and probably done it before on a number of occasions. Those wanting a quick fix before Diablo III comes out could do worse. But, if that is the case, why not just go for something like Titan Quest, Dungeon Siege or even just play Diablo II again?
There isn't much point in Legend: Hand of God, but you might be able to get a couple of hours of mindless entertainment out of it.