An Italian woman who has not heard from her daughter for a while travels to London, where the daughter is living, and is shocked to be confronted with the young woman's world. During the brief days they spend together, the women come to acknowledge the insurmountable differences that exist between them despite the love they share.

All of the Doctor's incarnations are in crisis when The Rani creates a time-loop in the East-end of London in this 30th Anniversary Special.

In a Victorian Gothic mansion, strange things are afoot. The master of the house, away in Egypt, has been replaced by a sinister Egyptian. Cloth-wrapped Mummies roam the grounds, killing people. Beneath a pyramid, the last of the Osirans — Sutekh the Destroyer — waits to be freed, to at long last bring his gift of death to all who live.