The Doctor and Jo's cooperative struggle against failing escape systems and hostile factions while attempting to reach and repair the Miniscope device to prevent catastrophe.

As the Doctor and Jo scramble through the collapsing circuitry of the Miniscope, the Doctor urges Jo to push forward despite her exhaustion. Their flight through the failing systems becomes …

Vorg panics and triggers the Scope's phase two switch too late, seemingly dooming the Doctor and Jo. Blaming Shirna for her hesitation, he activates the failing device, which violently erupts, …