 Donna and her family are spared from dying in the destruction of London when Rose Tyler appears and convinces Donna to leave London in time though she never identifies herself to Donna. As a result of the Titanic crash, many Londoners have been displaced and are assigned cramped living quarters and live under martial law. Rose appears to Donna again and tells her that she needs Donna to come with her, but that doing so will result in Donna dying. Donna refuses, and Rose tells her that she will be back in three weeks. Three weeks later, Donna and Wilfred are using his telescope when they realise that the stars are disappearing from the sky. This convinces Donna that she must go with Rose, and she gives in and leaves. Rose takes her to UNIT and explains that the stars are going out in every universe. She explains that she has been able to travel between universes again because the walls of reality are collapsing, and the Doctor is the only one who can stop it.
