When the EPU array to power the suns was activated, an unknown force threw the system out of alignment. Orllensa had just enough time to send a distress call before the base was plunged into blackness. That same unknown force then burned out the eyes of everyone on the base. Soon after, the Eighth Doctor and Charley Pollard arrived in the company of ROSM — a rescue ship. Sensing that there were aliens at work, ROSM assaulted them, but the same particles that blacked out the base disabled ROSM. The Doctor worked with Orllensa and the others to realign and activate the EPUs to bring light back.