The Exxilon City Defense Systems
The sentient Exxilon city's autonomous defense systems confront intruders, including the Fourth Doctor and Daleks. The systems' lethal mechanisms must be navigated and ultimately disabled. The conflict highlights the struggle between organic intruders and a deadly, self-aware technological fortress.
Involved Characters
Arc Timeline
Season 11
2 eventsThe Doctor races to complete his gambit before the city’s defenses overwhelm him, inserting circuit boards to overload its logic with deliberate paradoxes. Bellal urges expediency as antibodies close in, …
As the Doctor and Bellal work to sabotage the city's central systems, the sentient antibodies seize them without warning and drag them toward the incoming Daleks. The city's own defenses …