UNIT's internal struggle with compromised leadership (Major-General Rutlidge) hinders their ability to effectively combat the Cybermen threat, causing mistrust among its members.

Isobel and Captain Turner’s playful, opportunistic banter about exploiting the crisis for profit is abruptly interrupted when the Doctor and Jamie return with the devastating news of Cybermen’s presence. The …

The Doctor and Turner learn from Walters that their attempt to intercept the Brigadier’s meeting with Rutlidge has failed. Walters reports that Rutlidge left earlier and the Brigadier departed shortly …