And right here, full synopsis:
(translation if you can't understand what he's saying, or a TL;DW, your choice!):
Larry Talbot has been searching and searching for years and years and years on how to get rid of this curse, because everybody he loves he kills, it's a terrible curse with how every time the full moon comes out, he transforms. He's at the end of his ropes, he's searched all over the world and he gets a letter from a mysterious benefactor who says 'I know a way to lift the curse'. And so they've discovered an excavation site that has this amulet with Amun-Ra, and with the power of the sun, he can potentially control the power of the moon to overshadow it.
So he goes down there to find this amulet, once he's down there, of course, as it always happens, it's at the last second, he's digging through the tents trying to find where they've located this thing and he transforms into the Wolfman. Now he's tearing through and killing everybody, while at the same time, deep within the pyramid itself, the High Priest is summoning Kharis to act as the tomb's defense which leads to the Wolfman versus the Mummy.
But of course we find out that the benefactor was really, always, Count Dracula. Why does he want the amulet? Because he can become a day-walker if he has the amulet.
So now, it's a battle royale between Wolfman, Mummy and Dracula!