Crisis on Sol Observatory takes place on a research space station in orbit around Mercury. Built to study sunspots and solar flares, the station was equipped with two high-powered electromagnetic radiation-shielding generators to protect it from solar radiation. Unfortunately for the station’s inhabitants, both of these shields malfunctioned during a recent and particularly severe solar storm. Sol Observatory was bathed in radiation that should have killed the occupants, but long-range scans by rescue craft shortly after the storm detected lifesigns on the station. The PCs are the emergency response team that has been sent to search for survivors, recover any valuable data, and find out why the shielding failed.