These days, every MIT Mystery Hunt has a theme, and the kickoff at 12noon on the Friday of Martin Luther King Jr. Weekend always presents the story of the theme. This year, it was a futuristic Sci-Fi convention (Zyzzlcon 3009) with guests of honor the crew of the Brass Rat, that got sucked into the region of space called Zyzzlvaria. The only way to escape is to find all the missing crew members and the Covertly Operational Inversion Node (COIN - traditionally the Hunt ends when one team finds a coin or other representational object at the end of a scavenger hunt). Here's T$'s video of the kickoff.
And a direct link.