Battle of Floor 0507

The Battle of Floor 0507 was a skirmish between the Twelfth Doctor and the residents of Floor 0507 against the Cybermen invading from Floor 1056 on a Mondasien colony ship. Initially ruled by, the Cybermen turned on him when the Doctor rewrote their definition of humanity, leading to the group fleeing to the upper floor while the Cybermen prepared to conquer the entire ship.

The Cybermen held a significant advantage as they were closer to a black hole, meaning years for them was mere days for the Doctor and the others, allowing them more preparation time.

The skirmish was eventually ended when the Doctor, having had Nardole evacuate the majority of the residents to floor 0502, used his sonic screwdriver to ignite the floor, destroying all Cybermen present at the cost of forcing him to regenerate. (TV: The Doctor Falls)