This supplement for the Mission to Mercury Playset (included in The Fiasco Companion) provides a metric ton of material to help you launch your next fiasco into orbit. Inside you'll find pre-defined characters, technical information, some nice jargon,and lots of good inspiration. This document lays out, in the very broadest terms, who is going to be on Mercury, what equipment is around, what the habitat is like, and what the various missions are. All of this is intended to provide a gritty, highly constrained backdrop for your session. Have fun with it and make the mission your own!