A short, stooped man walks up to your table and introduces himself as Professor Thomias X. Larkspur — a physicist.
"I was working on an interdimensional translocator at the university when my plans were stolen one night a few months ago. This morning I read in the paper that the palace police were baffled by the disappearance of the Eamon Museum of Natural History on 1st Street and Main Hall Avenue.
"My assistant, Yrn Zandro, a Loathian from the Eamon West Archipelago, is also gone. I believe he stole my plans, built a translocator, and warped the museum out of this dimension for evil purposes.
"I have finally finished my machine and located the dimension containing the museum. Unfortunately my translocator will only transport one person to the 'other side.' It is impossible to determine what effect the translocator had on the museum artifacts since other dimensions probably have different basic laws.
"I have talked to the museum board of directors and they said they will pay 5,000 GP for the return of the museum and also a reward for each artifact brought back.
"Um, one more thing. You will be the third adventurer I've translocated today — the others never returned. Do you want to go?"
You quickly go to the university and enter the professor's device. He throws a huge knife switch, and banks of lights and dials come to life. He says, "Here goes!" and presses a button.
You are assaulted by intense flashes of light and a deep thrum! As from a distance you hear the professor: "The main levels of the museum are in the shape of an H! Good luck! ... Well, I'd better find another adventurer now."