The Howler (Bruce Banner/Hulk Fanfiction)

When two pups are born into a pack it should be a joyous occasion. However, when the mother receives and ominous message for telling of a curse that was placed upon then she can only fear the worse. It isn't until they are adults that a dark presences seems to consume one of them. Will they figure out what is going on and how to find this Bruce Banner? Or will the pack pay for their mistakes?