[[Category:th century| *]] [[Category:s| *]] [[Category:th century decades]] On 16 January 2197, the crew of the Valiant, a fighter-carrier just passing by Pluto, began hearing bells. First came Armstrong, who went mad from the incident and was drawn to a door: an impossible door that lead nowhere. The Sixth Doctor and Evelyn Smythe, having just materialised on board, quickly ran afoul of Captain Tanya Oswin while trying to investigate the incongruous sound.