The Doctor and companions vs. the Master's schemes to trap and destroy them in Event One's gravity field

The Doctor, struggling with the aftereffects of his regeneration and slumped in a wheelchair, urgently directs Nyssa and Tegan to delete a quarter of the TARDIS's internal architecture to convert …

The Master gloats over his victory after believing he has finally destroyed the Doctor, only for his scanner to flicker with interference and reveal the impossible. The TARDIS materializes once …

The TARDIS hangs at a forty-degree tilt, its interior groan echoing through the unstable vessel. Relief floods Tegan as she confirms survival, her fear turning to triumph. The landing may …