Both RtD and UC have the full story listed in the manual/online - in the first, Hitler steals back the Spear and in the second - he steals it back again. Basically, both of the FormGen packs have no in-game story (the in game plot items are a carbon copy of the plot items from SoD - i.e. I recently played through SoD, RtD and UC. I've been a fan of Wolf 3d since I started playing it so I might do both those mission packs, just for the fun of it, but is the story similar enough that Ultimate Challenge is just a re-skin of Return to Danger, so that I wouldn't be missing much skipping it(Ultimate Challenge)? I realize most people don't play Wolf 3d or tis expansion for the story, but I like the few nuggets of storytelling there actually are. The story given for both seems very similar, and the level bosses are identical. I was doing some digging on the Wolfenstein wiki and I looked at the articles for Return to Danger and Ultimate Challenge.
