Doctor Who Series 4 - Journey’s End Trailer

Davros, creator of the Daleks, is saved from the Time War by an insane Dalek Caan. At Davros’ instruction, his resurrected race of Daleks transports the Earth and twenty-six other planets to the Medusa Cascade. Former Prime Minister Harriet Jones sacrifices her life to reunite the Doctor’s past companions -- Martha, Jack and Sarah Jane -- while Rose searches desperately for the Doctor and Donna. Separately or together, they must find a way to stop the Daleks’ plot to obliterate all of time and space.