Classic Doctor Who Season 12 Episode 7 The Ark in Space: Part 3

The Doctor and his companions continue their struggle against the Wirrn, a race of insectoids that threaten to consume the remaining humans aboard the Nerva space station. As Sarah Jane and Harry work to defend the Ark's sleeping passengers, the Doctor races against time to find a way to halt the Wirrn's invasion.

With the station's power failing, the Doctor decides to make a dangerous plan to wipe out the Wirrn, putting himself at risk in the process. But as tensions mount and tempers flare, cracks begin to show in the fragile alliance between the Doctor and the remaining humans. Can he convince them to put their faith in him, or will his plan backfire and bring about the destruction of the Ark?

As the stakes rise and the situation grows increasingly dire, the Doctor must dig deep to find a way to save the day. But with the Wirrn closing in, time is running out. Will he be able to rally his companions and the remaining humans to triumph over their enemy, or will the Ark fall to the insatiable plague of the Wirrn?